Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1167cc90b4c6287…

MALICIOUS

PDF

77.4 KB Created: 2021-04-07 14:37:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3c424b0c93184c2effb78d8319f3a4a8 SHA-1: 117447f85de2713dad2b30fd6f5af1ae6680ec26 SHA-256: d1167cc90b4c6287beeadf8f7126dd808baf8a4ec22883df51542a23b5006941
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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://botokaw.ru/wix?keyword=wwe+champions+hack+apk+android+1 PDF link annotation
    • http://tryadasert.online/vuwapedosupiraratotid7d407.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377379/normal_603f3e901281c.pdfIn PDF document text
    • http://hamsterbig.com/48313382170t5kgy.pdfIn PDF document text
    • http://0fruits.space/full_metal_jacket_happy_birthday_dear_jesus67htj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408172/normal_6051a8be47af8.pdfIn PDF document text
    • http://bukuxojunuz.mypressonline.com/82296760533.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408475/normal_602c0ad156102.pdfIn PDF document text
    • http://rbqjkwklnd.xyz/lukimevamuzexifijaxubuxipwln77.pdfIn PDF document text
    • http://help-feedback-amzn8.xyz/financial_accounting_tools_for_business_decision_making_8th_edition_by_kimmel_weygandt__kieso0uc3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463298/normal_6066bf61a8095.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/267fa46b-1627-4c4c-bc15-0b2297897809/the_monkees_daydream_believer_episode.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/bemonc_training_manual_2017.pdfIn PDF document text
    • https://7f58a6d3-5723-489e-a2bd-17fd91e1ddd5.filesusr.com/ugd/655495_79606a41e6da4f32bee682954ae19f34.pdf?index=trueIn PDF document text
    • https://351e5f87-f9e5-4015-92cd-d601692b9ec3.filesusr.com/ugd/a0d0d3_5b56f8b509cf42feb0ce9254570cb087.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd9d29e0-0cbf-4d3f-ad32-21861c47681f/netigekexowozita.pdfIn PDF document text
    • https://41c240d9-b4af-4f88-8fa4-2a41cce3a287.filesusr.com/ugd/01bc73_5ded8ea006e441499cc55dca06446550.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/doxifuba/cardi_b_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/wasuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b1704d7-32d6-4a81-a3dd-74702734a6af/zogumapor.pdfIn PDF document text
    • https://8d90b851-447f-4cfc-ac95-1e867b71b983.filesusr.com/ugd/b371d9_292f08d4109840fbab565b03ce7982c6.pdf?index=trueIn PDF document text
    • http://tivakifuzir.atwebpages.com/83971028069.pdfIn PDF document text
    • https://06540f8a-e2b8-489a-a5ae-d3c1dd841b7b.filesusr.com/ugd/c4f63d_0b3c911ba27f44abbef8e18cf4d1d697.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ligole/13017920457.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/avery_bookmark_template_word.pdfIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF012 5500 bytes
SHA-256: d190ed9b2262a447103c2846991c7aa0cb65deb06c4693089025c071bcb0fe1d
font_01_sfnt_off000102b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B4 10924 bytes
SHA-256: 5c23bb663b5d8b871ab56bb8fc8ca990f2f9fc73e1aa6b0c73bb339cb63510b0

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