Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a94557cecca65d4…

MALICIOUS

PDF

97.7 KB Created: 2021-07-06 18:48:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e95e499a2e1ee4301a121c7431d6e95e SHA-1: 4f1fede35fd39d6df29d86648fb8894357208ecf SHA-256: 9a94557cecca65d4c3f03d612c248e4a87e7f76922bcc7ca122d66c5876d0c09
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links to compromised websites, suggesting an attempt to redirect users to malicious content or downloads. The presence of a 'download button' heuristic further supports the phishing lure attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9895

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 https://oniceh.ru/uplcv?utm_term=the+sims+4+sexy+cloth PDF link annotation
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bad89aa8104---16434296031.pdfIn PDF document text
    • http://maivietnamesecotati.com/uploads/files/12593632898.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609428bc768cb---11128337792.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/087sh2i0e4lfea6deebu8efuka/gukenipenotojetumat.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608292e798eb7---lafokozemazarodif.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/333a1fa39a8deb79419500f863f134ae/92661390158.pdfIn PDF document text
    • http://bertoniamministrazione.it/bertoni/public/file/jisupidaduxukomojuxa.pdfIn PDF document text
    • https://consurs.ro/ckfinder/userfiles/files/riwomubir.pdfIn PDF document text
    • https://burmesecatclub.nz/wp-content/plugins/super-forms/uploads/php/files/7a425fb379c9a3f2df4f34b3812b5824/38139881326.pdfIn PDF document text
    • http://baovephuongtroi.com/vietkiendo/upload/file/gopavenisivojedefexive.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16083749f840b2---34145760469.pdfIn PDF document text
    • http://agnieszkapawlik.com/userfiles/file/93356317106.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/sn6korjbehms2ih61pkvadmjca/89710452647.pdfIn PDF document text
    • http://www.acefence.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb79ea5fce---52851645406.pdfIn PDF document text
    • http://iseveranscopy.com/upload/editor/file/77781929092.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/bqfvo27omh4mug1j6g88l8smv1/vuxoxuvezudinexog.pdfIn PDF document text
    • http://igorodstore.ru/files/userfiles/files/78075792393.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16093cb5d58bf7---fowazutadifitefolezizof.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607471cb67f20---40922046917.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f041cd46c4---murugiraratozito.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160762a3f35c8a---wolezivi.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/38386109360e43193b23ac.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160772ce285950---38979339487.pdfIn PDF document text
    • http://anhuifan.com/upload_fck/file/2021-5-13/20210513104557574742.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160756eb3c7456---27359331064.pdfIn PDF document text
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001027b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1027B 18240 bytes
SHA-256: 2a4d68d3edfd615bdd871717a3bc6df87f72d1b752c76a45c5768ad1b60417f5
font_01_sfnt_off00013232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13232 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014a49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A49 10384 bytes
SHA-256: 34167ea6d0d0d492731d4630ef3662fbfdc754e4f775e53f7e4b4376ef0b55c9
font_03_sfnt_off000161e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161E1 16640 bytes
SHA-256: 489f46516e1a5b84f680bcd1221d417654ac4cb871d5ee607ee716c13b378d24

Open this report in the interactive analyzer, or submit your own file for analysis.