Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7f966db2e7479ed…

MALICIOUS

PDF

76.9 KB Created: 2021-03-22 06:18:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 881075432153bf7f4f861e97f4124cc0 SHA-1: 422b2d8c94b1ffe0f6a721fec2e72e9549e134f7 SHA-256: e7f966db2e7479edebf3810402203f9259d06d83a7ac844e943d448e67f1f3ef
186 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Joker movie download in hindi moviemad' and embeds multiple external links, including one to 'xezojet.ru'. Heuristics indicate a PDF link farm on disposable hosting, suggesting an attempt to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware delivery via the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://xezojetit.ru/wix?keyword=joker+movie+download+in+hindi+moviemad
    • https://cdn-cms.f-static.net/uploads/4461773/normal_6035cfbf6733d.pdf
    • https://static.s123-cdn-static.com/uploads/4388283/normal_5ff8933a56d97.pdf
    • http://selectgetc.top/how_to_call_robinhood_supportk7njt.pdf
    • https://static.s123-cdn-static.com/uploads/4456728/normal_5ff9043aaf75d.pdf
    • https://static.s123-cdn-static.com/uploads/4457620/normal_5ff7c49224239.pdf
    • https://cdn.sqhk.co/sogunixe/ibiejgj/13146766325.pdf
    • https://cdn-cms.f-static.net/uploads/4467581/normal_605226f5c0aee.pdf
    • https://cdn.sqhk.co/bojodunaluko/wghhjGT/36168401065.pdf
    • https://cdn.sqhk.co/votojuxosaf/6Y9zVeN/cheapest_cruises_from_florida_2019.pdf
    • http://milanomoda-italy.site/mazda_6_2018_reviewvo57o.pdf
    • https://cdn.sqhk.co/zupitefa/jZIjjhd/mazel_tov_gift_shop_new_square.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://67dec473-0a9c-497c-80b1-62a4c84c5046.filesusr.com/ugd/0aab01_6a9dc9370c274565a6e76a14b95f23d6.pdf?index=true
    • https://7915398d-c9c2-4241-abdb-40cf742e4b8d.filesusr.com/ugd/d4df0f_be8db5334427427698de887192eb84a0.pdf?index=true
    • https://fb413987-6e77-4bf1-aaa6-e97eb550fbee.filesusr.com/ugd/108936_87ad2e69a25c4e6d89b61a52a5071f75.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a11a0214-acbf-4eb1-8925-2f79f92ace12/euripides_bacchae_sparknotes.pdf
    • https://f7f2eb1f-4ce6-40bf-b337-6bcc2c9c1a95.filesusr.com/ugd/dc6899_72b554f2b4544a6c8cbe8b5e59738d43.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7a426bb2-f6e6-405a-a8df-e62fbd0a2d83/45836330338.pdf
    • https://569e8712-2873-4b93-a654-ea71b6b809e3.filesusr.com/ugd/345929_2edc0b7213da49569e1803629489a99a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/22defc70-231a-444e-8f1f-c7bfb5740e8f/resumen_del_libro_del_monje_que_vendio_su_ferrari_por_capitulos.pdf
    • https://26577e91-18e8-42c3-8e85-49dcca1d6605.filesusr.com/ugd/195787_f08a881621d8425ba130238f1bda12f8.pdf?index=true
    • https://c0cead0d-5248-483d-940e-95cc3acd9bde.filesusr.com/ugd/20d83a_3f6845725abf42b0ae6a73d9bfa920a9.pdf?index=true
    • https://3dcfbd4a-ef33-49dc-a04a-0aaf5307c30d.filesusr.com/ugd/b47706_315917212bab4476bf753fcb5d36f83f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e0029f55-1b1b-4bc9-b201-25113f3f0553/ap_psychology_princeton_review_2020.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_off0000f183.bin
353da728347fbb443ed847b286645bb33797e04a207b6af9b1f1ec5e5dfdb7cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF183 5092 bytes
font_01_sfnt_off000102be.bin
b565c5d0ffdb91dcbaafc91874e189617fc4a7cd3c84a382b0d673789ff077b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102BE 10468 bytes

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