Malicious PDF — malware analysis report

Static analysis result for SHA-256 195f964bc69c9a15…

MALICIOUS

PDF

78.0 KB Created: 2021-06-24 21:23:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c98866f6c2ca75719fb8163020170783 SHA-1: 5c71011ae0dae92446c4b9cffeb50fdcc55d4945 SHA-256: 195f964bc69c9a15abb289f3ad7b6c5788eedab6daa2945a5026616f12059dff
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier with high confidence. It contains numerous links to compromised websites, indicating a link farm designed to redirect users to malicious content. The document body, though obfuscated, appears to contain search result-like text, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://www.m2asolutions.com/wp-content/plugins/super-forms/uploads/php/files/e3c8e80fc65cb5459452b471507d7cd5/firojezojokovudeditat.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/3omjev6r03l6st578ek7638cu6/fomotarepuzekovenepizemi.pdf
    • http://cateringkieuan.com/uploads/userfiles/file/68214438173.pdf
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/c87regq2gh4jlkgbr17dr9m20q/runotex.pdf
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607faf37c0002---52793830321.pdf
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/mtgpf2t1mntitgr9d8acu10t37/91214926577.pdf
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/63ja7adfg8kp39et3u16hefm6r/88651343685.pdf
    • http://asiadomainstore.com/userfiles/file/gizovusuvosalikejid.pdf
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/56e53b70428719564dd64411e4b9befe/80520722474.pdf
    • https://simovi.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160cd09ae1d001---mudoponimineboropuw.pdf
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f64a9c0992---73912070708.pdf
    • http://aire-limpio.com/img/editor/file/59475522913.pdf
    • http://ayurveda-shiatsu-qigong-nice.com/upload/files/lavat.pdf
    • https://melz-feu.ru/upload/1131673536.pdf
    • https://www.sacda.org/wp-content/plugins/super-forms/uploads/php/files/ik3voatn8jnppd36bgprru7ah6/rifimiwejesotedafog.pdf
    • http://www.next-conseil.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160afc0599f4a9---goramituxesivikivotabas.pdf
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609ece68ed77b---17386000724.pdf
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/16094a1592cd3b---reveko.pdf
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e54c3870c6---20492773591.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=39+root+diseases+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5c0.bin
54ecd6846dab702680cd05892aaff792254e7572257a8de7899a474a26ade902
pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C0 5228 bytes
font_01_sfnt_off0001078d.bin
edf8a4d697b49b54235e831f022bb1b844293aeb0c8c6a0d3f671ab87c30fc7a
pdf-font-stream PDF embedded font (sfnt) at offset 0x1078D 10616 bytes