Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9ff2466ed769b6d…

MALICIOUS

PDF

90.2 KB Created: 2021-04-03 19:25:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75b33a37fa8f4b7e9c9f083d97007551 SHA-1: a4dfacc052bdc42314ad3b3e4a3a6084849fae7d SHA-256: f9ff2466ed769b6d6dd7a627de978a3f78f0579bfe7c3edae9fcabc233cab3e6
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many of which are part of a link farm designed to appear as legitimate search results. The heuristic 'SE_ADVANCE_FEE_SCAM_LURE' strongly suggests the document's purpose is to trick users into believing they will receive a prize or parcel, which is a common tactic in advance-fee fraud. While no scripts were extracted, the presence of embedded URLs and the link farm structure indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://seumenha.ru/wix?keyword=the+human+eye+worksheet+answers
    • http://epipog.com/363555940928kev2.pdf
    • http://interbank.link/rodrick_rules_full_movie_free_downloadbrqra.pdf
    • http://geosen.net/subsistence_savegame_editor8mcnr.pdf
    • https://wivopugigevu.weebly.com/uploads/1/3/4/5/134514529/80b79a8625bab37.pdf
    • https://boxemafal.weebly.com/uploads/1/3/3/9/133997404/sulevuvaxeb-povagakedakewi.pdf
    • http://farilanij.iblogger.org/clamorous_to_learn.pdf
    • http://airet.space/11429682063q4o5b.pdf
    • https://mizovitima.weebly.com/uploads/1/3/4/2/134266674/besim-tojopadokilagew-marogajifivor-gepavo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://5c71d6b4-13b5-43a2-97a4-9a0eba4d0f4d.filesusr.com/ugd/0f1814_67ba5a01ca804808adb9113f555150e3.pdf?index=true
    • http://wugejevesi.rf.gd/xizotirojelamedezi.pdf
    • https://e3c65705-3664-417e-97b1-2ac29bfab8bd.filesusr.com/ugd/6a5da5_c76ced279e874c84bac3a8af003fe7f6.pdf?index=true
    • https://b5c4f4dd-ae1f-4f6a-908c-f463551224e4.filesusr.com/ugd/dafd60_2635bb1917f44806a8ecef5f64f2fa74.pdf?index=true
    • http://rikewopuze.epizy.com/29505732025.pdf
    • https://b354d503-40d1-4c97-84b4-bc0b16c12f35.filesusr.com/ugd/8c7d07_3a24735860084286af4c0b4bf5c6e9ad.pdf?index=true
    • http://kugilib.rf.gd/nebavina.pdf
    • https://354df738-7a8c-4643-bdcd-aa58f7c4bd0c.filesusr.com/ugd/69cf62_c1315df8b2c4484aac3da2609487c4f5.pdf?index=true
    • https://9fb0fece-6c2a-4f8b-8ff1-5d9ea67f5ee7.filesusr.com/ugd/f6a907_bf47567bf1f24284bddbba1950ad3095.pdf?index=true
    • https://ee60c613-3dd1-430d-b711-08e3dcbf0273.filesusr.com/ugd/19ce5d_e9d64b51be0447c2bc79124d155fc549.pdf?index=true
    • https://6cdf8c5e-36a0-4b6d-987f-32d3d50030cd.filesusr.com/ugd/3c2e2e_b35b11cc031249f8a20c412c5e5c3d8f.pdf?index=true
    • https://98e80eac-0673-4bf9-a3de-4132461903b3.filesusr.com/ugd/1acd69_b87acba2dc104a7a969e76ede1e30c7d.pdf?index=true
    • https://b3a8b944-ddec-4d17-9b53-5a1c05c66d8c.filesusr.com/ugd/314503_b07996fca4094c32a6f5a777e95900d3.pdf?index=true
    • 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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d30.bin
5dcae9a565db512e7b3f91c4ad8fcd5ba4bdf997736369332ba9eddd11d35475		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D30 5100 bytes
font_01_sfnt_off00011e70.bin
807ff84555e10dad525f8fbe61048b5d684163b7f4ac39962026a3c4001aa5be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11E70 11452 bytes
font_02_sfnt_off000145b7.bin
e5458d7b6d82539349b17fc4713a17e1381d471255c72d9f8116b7c86e08c443		 pdf-font-stream PDF embedded font (sfnt) at offset 0x145B7 16168 bytes

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