Malicious PDF — malware analysis report

Static analysis result for SHA-256 68fc03ad7956032d…

MALICIOUS

PDF

84.4 KB Created: 2021-03-08 23:52:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: adef26edbc8aeeaaa9f7c0f428485817 SHA-1: 93baeb3a52de9e8ddd7a7a079a83abb099313c93 SHA-256: 68fc03ad7956032d5389d237c088073c588be11ba71ebf6ff23ca75aaf518a16
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or scam attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to a phishing site disguised as helpful content. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing lure.

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 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://dugedepap.ru/strik?utm_term=epson+xp+400+changing+ink+cartridges PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481665/normal_601fdc89d1195.pdfIn PDF document text
    • https://cdn.sqhk.co/rekutadis/ifJhajb/savijowero.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454182/normal_5fd0806e92c7a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_601f2d26b778c.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/JgjiZjf/45304372857.pdfIn PDF document text
    • http://fonujameritules.getenjoyment.net/britax_marathon_clicktight_car_seat_cover.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493266/normal_6000a1ef3c6c8.pdfIn PDF document text
    • http://rajebamif.22web.org/devil_may_cry_5_strategy_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/vomifavafo/hbqxNOL/charge_blade_guide_mh4u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469641/normal_600fbbb75891a.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/5d5aaf7c-354b-4239-9bce-64f72ed9fbb7/3661207815.pdfIn PDF document text
    • https://1b65b899-5fad-42bd-af9e-a3fb1d6a4c80.filesusr.com/ugd/a2ebd8_58fe5f88556745a1a31152d981b255f3.pdf?index=trueIn PDF document text
    • http://vujapoguxesak.myartsonline.com/search_google_images.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16724a62-6bb8-48c1-9ab0-caeee19b3a83/armitron_wr165ft_watch_manual.pdfIn PDF document text
    • http://mujixexebekipan.rf.gd/bozubodiwitavuregiv.pdfIn PDF document text
    • http://duwemanuwixam.atwebpages.com/esio_trot_film_netflix.pdfIn PDF document text
    • https://00407fa8-a9ef-4b78-9bbe-46147fc8acf6.filesusr.com/ugd/5ecadc_92add430824040eca37956f6f6c57ca6.pdf?index=trueIn PDF document text
    • http://kofipazefoleris.epizy.com/discuss_the_history_of_computer.pdfIn PDF document text
    • https://80f75f89-a1e3-4611-a0ef-7a704eb82da9.filesusr.com/ugd/0286dd_956fdcbeccbf42e5982c0c9d5e3f403c.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A1E 5624 bytes
SHA-256: 3cd71eebc067bf416557c3e4482b0d95bc2840f3cb0da42994cb773a91bddf47
font_01_sfnt_off00011d46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D46 11016 bytes
SHA-256: 0a843a656022a57241164b6c373f9619abe4fba5b16fa98fd969d92476fc9b0b

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