Malicious PDF — malware analysis report

Static analysis result for SHA-256 06ad7febe40eccaf…

MALICIOUS

PDF

81.2 KB Created: 2021-03-29 16:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: a0e1460320fd0b9bfe0eb8421eb70ae2 SHA-1: 201bfa25f526a4813247312b00060e6a09e895f7 SHA-256: 06ad7febe40eccafcce44a2ee22c0ecea5bf414a08b5db0e17b9af2b31cf1dc6
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL suggesting a lure related to 'medicine ball workout pdf'. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were directly extracted, the PDF structure and embedded URIs are indicative of a link farm or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/award?keyword=medicine+ball+workout+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368227/normal_602a8537c876d.pdfIn PDF document text
    • http://igcopyrightverify.com/mulezivuzatovame61of3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495399/normal_601d9f7599fb8.pdfIn PDF document text
    • http://malespw.xyz/80215330972fx343.pdfIn PDF document text
    • http://trysalon.xyz/2598792220ztdid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422620/normal_60183cbc6147b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451225/normal_60027f7f0f6ba.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://153f2bed-3501-4ec5-9468-ed1987511f6d.filesusr.com/ugd/f67134_30bd8b477a584b6b8d9f9dd698c7b607.pdf?index=trueIn PDF document text
    • https://1ce8651a-bfbb-4b9a-b1bf-24b3b574775a.filesusr.com/ugd/ac72e0_0e7289acf5ab4b55a5ec9199f66fc225.pdf?index=trueIn PDF document text
    • https://c46c713f-5e69-4c64-aad4-d86f29440f76.filesusr.com/ugd/957c7b_1baec83eef0d4567ae3738bf3bd69cb3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/85569810587.pdfIn PDF document text
    • https://e39bfc17-a898-4016-ac91-fc9303c112df.filesusr.com/ugd/b5068a_a71cd2fda20b430781fc7f536e2c173e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/89892179437.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/nedelarinuz.pdfIn PDF document text
    • https://b01cffea-7a05-49e8-9781-04202a21c04b.filesusr.com/ugd/d5d855_e020d339355a409bbca24db2f89fcead.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/21949859880.pdfIn PDF document text
    • https://s3.amazonaws.com/satuja/jewovorikadojapaw.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/guidestone_life_insurance.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/bounded_rationality_the_adaptive_toolbox.pdfIn PDF document text
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_5df5000858f5471aa9a072706098c70e.pdf?index=trueIn PDF document text
    • https://7f03322d-63d6-449b-a8c2-a80beffeb2b6.filesusr.com/ugd/2994dd_def8c5f10fbf4bcf975a5530ca646f12.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/bhagavathi_tamil_movie_song_masstamilan.pdfIn PDF document text
    • https://s3.amazonaws.com/tunenijexe/the_debt_collector_movie_rating.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_off0001015d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015D 5272 bytes
SHA-256: f3b76ad970744466b81ec634c9713bc61ddfd64268061e956aef0a58a133d32d
font_01_sfnt_off00011375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11375 10708 bytes
SHA-256: 2449cdb9c29ba77478c0a0729415aeec139865441d8ffe64ef80ce782fdef3ac

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