Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a6d2a024dafbe5c…

MALICIOUS

PDF

75.6 KB Created: 2021-06-09 21:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 60fd00c7d62eb08df2f5907b4c7d44b3 SHA-1: ce42f9537e8860acd5fd4df2b31f127064300c15 SHA-256: 8a6d2a024dafbe5ca929788319d7959b98ec4376d8176cba2dd844e21b52b840
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically identified as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. ClamAV detection and ML classification strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://drafthe.ru/pbw?utm_term=the+best+ppsspp+games+for+android PDF link annotation
    • https://nelunozulugekis.weebly.com/uploads/1/3/0/7/130739970/7735655.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379359/normal_605d5e4945476.pdfIn PDF document text
    • https://nubegajal.weebly.com/uploads/1/3/4/6/134668927/b685f.pdfIn PDF document text
    • https://jewumuseporefi.weebly.com/uploads/1/3/4/5/134599703/b317c212ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426820/normal_600f932686407.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474450/normal_606727e78e02d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473044/normal_605b580186e54.pdfIn PDF document text
    • https://pafuzoxim.weebly.com/uploads/1/3/4/5/134585506/zunidujedeb_jisenofurofolen.pdfIn PDF document text
    • https://radasezase.weebly.com/uploads/1/3/4/6/134643415/wofebusex-xewelagedasit-binok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489740/normal_603b230620c73.pdfIn PDF document text
    • https://xuwulusepe.weebly.com/uploads/1/3/5/3/135310973/64c748d.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/91ad519b-fdb7-442e-9760-0c0b64853993/modal_verbs_exercises_perfect_english.pdfIn PDF document text
    • http://podimil.pbworks.com/w/file/fetch/144802227/mepulamoguvelukuzejir.pdfIn PDF document text
    • http://kolasotosexu.pbworks.com/f/friction_on_horizontal_and_inclined_plane_lab_report.pdfIn PDF document text
    • http://fokopaviwu.pbworks.com/f/dunaduto.pdfIn PDF document text
    • http://xutosop.pbworks.com/f/32396811699.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edc986ba-d939-458e-ab52-b4f82ac5e45b/42284652336.pdfIn PDF document text
    • http://sewafebi.pbworks.com/w/file/fetch/144836835/piwamugikesijefiberipo.pdfIn PDF document text
    • http://ritijix.pbworks.com/f/72055915054.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7afdced6-4427-4b6d-8f28-4b5e0e30f1a3/mimpi_dreams_mars_level_walkthrough.pdfIn PDF document text
    • http://sukagafamo.pbworks.com/w/file/fetch/144625929/66644141757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9136c433-45fc-444f-b50f-66cbcdc43e25/kugopozusuleresiwuzamawu.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_off0000ead6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD6 5512 bytes
SHA-256: c5b013c5cb3d6e0f553d4977bef98a3d22770586f56a9a8789b49a0f81d660b7
font_01_sfnt_off0000fd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5F 10468 bytes
SHA-256: 9918abe8101f91ad655165595374d468cfedbc0002ad3cd43b0e716981707fde

Open this report in the interactive analyzer, or submit your own file for analysis.