Malicious PDF — malware analysis report

Static analysis result for SHA-256 9af7721f1b029a94…

MALICIOUS

PDF

76.3 KB Created: 2021-03-04 23:53:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: b659be547c5243a48b4e698eff3bb9b8 SHA-1: 47026f4518ed71d5c3822aabdfe1113b892bb5fd SHA-256: 9af7721f1b029a94584b09119ab3f3c83521ce5cd08cebef57247a9dfb7e1e71
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or link farm attack. It contains a large number of external links, many of which are likely part of a SEO link farm designed to manipulate search engine rankings. The primary external URI points to a URL that appears to be a search result for a product, suggesting a lure to direct users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://jottigo.ru/award?keyword=roland+td+11+price+canada PDF link annotation
    • https://cdn.sqhk.co/zeboxuze/kheicQJ/82476905985.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414495/normal_5fed0239141e4.pdfIn PDF document text
    • https://cdn.sqhk.co/zosiwutu/aVhjeUw/quizup_multiplayer_with_friends.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386095/normal_602e39fa7d64a.pdfIn PDF document text
    • https://cdn.sqhk.co/jugomuzuteb/DSr4lhb/4266597383.pdfIn PDF document text
    • https://cdn.sqhk.co/moturira/heu1hc2/dujokojawotunoxixiset.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/gijfpVI/adamantine_pathfinder_spell.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403679/normal_5ffa7253be556.pdfIn PDF document text
    • https://cdn.sqhk.co/bunigenozav/ox1C1hc/3d_bowling_online.pdfIn PDF document text
    • https://cdn.sqhk.co/votiwixuduzo/igoDjgG/gifitomu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zasepo/applied_physics_letters_reference_format.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/mathematical_physics_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96f2bb0a-cc6f-42c2-802f-1c12d6e11a63/how_to_make_poached_eggs_in_an_egg_poacher.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f8d92ec-cd5b-4ef3-af8b-104ad0debd81/dbx_driverack_pa2_review.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/81611343388.pdfIn PDF document text
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_ef682697e07e4ece8b0150a152a32fc8.pdf?index=trueIn PDF document text
    • https://13ea8442-998f-4f14-ba3b-7f37e53a414c.filesusr.com/ugd/008a9f_c0765a75a0e1446bb035f6c20dee7672.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF14 4736 bytes
SHA-256: 04325336ac9eafefbf2177efb904f1c75a36ef7d59fba4a98af0f0d3729b41d9
font_01_sfnt_off0000ef37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF37 11116 bytes
SHA-256: 28ea8f9269ee8e49f992001e462176de340d74015af30963db0b6404aaa194dc
font_02_sfnt_off000114f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114F5 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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