Malicious PDF — malware analysis report

Static analysis result for SHA-256 8206dd70231b270a…

MALICIOUS

PDF

85.4 KB Created: 2021-06-28 16:37:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: c6e1c502903825aeeb7b48cc3320f67b SHA-1: 65275bc7d20fc1b911707f93e342149485c1f7ba SHA-256: 8206dd70231b270a578330788c25076f12a11b498f159754c1b004436c319750
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress upload directories or disposable hosting, suggesting it functions as a link farm. The presence of these links and the overall structure strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • 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.
  • 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://sentezetutmerkezi.com/upload/ckfinder/files/xikinaliviwevutalofuvafi.pdf In PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097836398969---95845158170.pdfIn PDF document text
    • https://llibreriaha.com/img/events/file/pifupolavo.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606c797d7f955---34274984237.pdfIn PDF document text
    • http://timavoshipsupply.it/userfiles/file/lokunulisorov.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/v1l2k9uf5sjkl3ugrdbi78770e/gobemenidisixigeke.pdfIn PDF document text
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb02452480---kosinoxadupajagobomexibof.pdfIn PDF document text
    • http://asupuro.com/upload/save_image/files/94597523277.pdfIn PDF document text
    • http://kirakuramenandsushi.com/uploads/files/17887584128.pdfIn PDF document text
    • http://asremajazi.com/uploads/files/24552407865.pdfIn PDF document text
    • http://elfuklid.cz/foto/Image/file/fawigam.pdfIn PDF document text
    • http://cosmic-kino.ru/sadm_files/4385436913.pdfIn PDF document text
    • http://sqx.cc/upImgFile/file/20210515203716.pdfIn PDF document text
    • https://canionglobal.com/FCKeditor/file/kipijoxo.pdfIn PDF document text
    • https://jahanchart.ir/data/files/file/sexowijovirebejasonaliki.pdfIn PDF document text
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/7bc3626e214951411731438c4a00ba6f/rosilofogabobubisiji.pdfIn PDF document text
    • http://thoitrangvabaoho.com/Images_upload/files/kepajin.pdfIn PDF document text
    • http://asahiru-ban.com/files/files/21053279725.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/d5ee678ebcd583b6066893b15ff90e0b/biravelivi.pdfIn PDF document text
    • https://agrilaui.com/userfiles/file/xeteludumiruzesi.pdfIn PDF document text
    • https://ag-concept.ru/wp-content/plugins/super-forms/uploads/php/files/231d286d0f40e2a7c916b45155547b79/kudarezava.pdfIn PDF document text
    • http://libertyquad72.fr/userfiles/file/fifosisanonem.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=class+11+physics+laws+of+motion+questions+with+answersPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AC 17408 bytes
SHA-256: 2f0e6927a90007a6ea9b389e7879e804fbdb0101d0eff3782022907e34d028e7
font_01_sfnt_off0001158b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1158B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012da2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DA2 11276 bytes
SHA-256: 6244e06b7e5caed173d5039fed6354cad35c62ff220542b407a0dde28c2443ba

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