Malicious PDF — malware analysis report

Static analysis result for SHA-256 82d191990912a70e…

MALICIOUS

PDF

91.1 KB Created: 2021-07-05 13:51:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: eb6d6ec1cb2056591a21870aa0b136d5 SHA-1: ec9b1e8df84575bb06d6987b83a7ad6c278355fd SHA-256: 82d191990912a70e8097c1e1aa1290361c6be2bf15fc6f875b92f11326aeb0ed
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised WordPress upload directories, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious sites or download further payloads. The document body is heavily obfuscated and unreadable, providing no direct content-based clues.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://amirafouad.com/uploaded_files/file/56753660192.pdf In PDF document text
    • https://ikima.fr/uploads/file/10807459192.pdfIn PDF document text
    • http://meyergarden.com/ckfinder/userfiles/files/59718575602.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/38799297100.pdfIn PDF document text
    • https://www.rogierstoel.nl/wp-content/plugins/super-forms/uploads/php/files/a43klprpkdvl68u3u8vt6fd6hs/20088444085.pdfIn PDF document text
    • http://terezmisszio.eu/files/file/godawiwok.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085b97b7f96d---lemaxerupijedutobeduxa.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/0derqrrsleu0omde7n1dtqh08k/wuzolezefat.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/0698c54f807dfc465fda5aafc8b34499/36870733661.pdfIn PDF document text
    • http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb41f64de79---zetetove.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/8p5caopcmf4e91khm1ei7r0h5b/puposaxop.pdfIn PDF document text
    • http://mirrorgallery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160876c9d0a31e---tudanopejeripu.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609d9b797ee97---80956620078.pdfIn PDF document text
    • http://www.gaviprintpack.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b99e8fd2a2f---vifedolapefunonevaguworo.pdfIn PDF document text
    • https://arerp.kr/data/file///xajagetuvagekego.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f4cb5a23c6---kebepokobilasawazeriwi.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ce28077eec---ganudizemujiwoboris.pdfIn PDF document text
    • https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/fafbb8bc9c7abb9a150079ac9c3120e6/45537207832.pdfIn PDF document text
    • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1607922310b6bc---lobinevesarid.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/u2levb5rve05is4nik8nlvbe1u/jusarejuletabogop.pdfIn PDF document text
    • https://bangprice.combangprice.com/beta/cms_image/file/somojuxojunawawiwus.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c4b9bf68efe---wusokiwolulupivudilaz.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/9f6b295512aa06b33c50f6ded36426fd/dapev.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/72a881edb000bd142ef69c231ae80d9d/lizisad.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/85b6bf6ce5240097412dee87e4fcebe6/xasuletuwanexevuradelofes.pdfIn PDF document text
    • http://cuhs1981.com/clients/8/82/82ca37c076ec4232796cb58ed009bb3a/File/48195459760.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=oxford+duden+pictorial+dictionary+pdfPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7FD 21284 bytes
SHA-256: d3f1abd22be88b99d7299283fa2033aa9370aa9af30cb0d825249ded58e3cfbb
font_01_sfnt_off00012bdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BDD 10788 bytes
SHA-256: b383610a44966a0d28881dcfdb17ec63877ea98c601e2c5933c9e17d43d2b9ee
font_02_sfnt_off000144e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144E0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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