Malicious PDF — malware analysis report

Static analysis result for SHA-256 9aba4a504cfdf01e…

MALICIOUS

PDF

110.5 KB Created: 2021-03-18 09:53:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a7d3e96820dc5696f52ebe3a6c1a495d SHA-1: b5eb541e357c1a8f49c7f4a38227334b5c939692 SHA-256: 9aba4a504cfdf01efa8395845e40238cb554448b9ad73d9648d586695feb8fbf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The PDF contains a significant number of external links, many pointing to disposable hosting, indicating a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were extracted, the embedded URLs and the PDF structure itself are indicative of a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 7

  • 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 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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://ponafet.ru/strik?utm_term=double+dapple+dachshund+health+problems PDF link annotation
    • https://paleforekirito.weebly.com/uploads/1/3/4/5/134579508/5823894.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/ijfje41/nogetifusikebej.pdfIn PDF document text
    • https://fifubinagate.weebly.com/uploads/1/3/4/8/134854053/pisejafumove.pdfIn PDF document text
    • https://jipunelokafup.weebly.com/uploads/1/3/4/1/134109215/xuxavazilimab_lozitixakin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388280/normal_5ff47e55a2e54.pdfIn PDF document text
    • https://cdn.sqhk.co/zaborofisi/4jhihuQ/30755136016.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414868/normal_602b2c3c0fd19.pdfIn PDF document text
    • https://rinapaluvubozi.weebly.com/uploads/1/3/4/6/134669605/5459412.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412767/normal_6048f4ea7f407.pdfIn PDF document text
    • https://cdn.sqhk.co/pitazitizej/2igNqhi/mufijududodovisegev.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451575/normal_60052d65f380b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447641/normal_5fed45075971e.pdfIn PDF document text
    • https://cdn.sqhk.co/tosuwukiwate/mgdiaDd/soop._io_parent_and_student_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413345/normal_5ffba2eff00bf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://6afed14e-2b01-442b-8c2e-11a8a6f39965.filesusr.com/ugd/46a5ae_4779f4bf371e4edea58b6323b84efee7.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b3f8a81-f792-4242-8b96-aff4f7bfa05f/dagijivukalilotu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b124f428-9cb1-435c-b7cb-893060a6b6ce/60500523949.pdfIn PDF document text
    • https://aca56392-15ae-48e8-982c-fdf6c4ac0dc3.filesusr.com/ugd/00c070_d46904d924f346a7801ed87ea2a5b9a2.pdf?index=trueIn PDF document text
    • https://00407fa8-a9ef-4b78-9bbe-46147fc8acf6.filesusr.com/ugd/5ecadc_cfa8004ef1204afeaf286e5ce73e3b6f.pdf?index=trueIn PDF document text
    • https://b5c90759-dbf8-4ccd-b12d-e23c958527f9.filesusr.com/ugd/915a55_12380699e7794ec6af1d2a4a8238f8a1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/76803c36-6f8c-477b-a09b-b7644257db8d/casio_gw-9400_manual_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a21adfda-876a-42db-a934-d9356f33b694/interior_decorator_salary_los_angeles.pdfIn PDF document text
    • https://2ddedb0e-b7b0-41c9-a8bc-c018bd0e6e4c.filesusr.com/ugd/70094d_0abe183ec9924fbb938dd54b6085b3d4.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15832 5452 bytes
SHA-256: 915eb6ac59f621a1c222c9a32da2e9783e475e380e562181450d0ca6122fa180
font_01_sfnt_off00016a8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A8E 11800 bytes
SHA-256: 3030c4fa5740af183cf89db514eb9a29ed0afef189756040bf15133a1f57ee97
font_02_sfnt_off0001928a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1928A 17400 bytes
SHA-256: ff1b431ae899271ac88199f2a624bfa467931a6e15b730365e3a6d5dc92eed2f