Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c56960e9e442ce5…

MALICIOUS

PDF

76.5 KB Created: 2021-03-18 07:53:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 00aaea8d08bbeeead7a39f86829b60c0 SHA-1: d66c0b14b6a6247d323ca1880790751b61b9d67e SHA-256: 7c56960e9e442ce5d390f18d5c2c5e000da132070386fff4c184aa1bc207f0c2
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 0.9998

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://ponafet.ru/strik?utm_term=what+is+moolatrikona+in+astrology PDF link annotation
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/ditalog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387589/normal_5fc5e99f461e4.pdfIn PDF document text
    • https://gifenatewa.weebly.com/uploads/1/3/4/4/134480542/1500969.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484169/normal_6006b5743df5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369311/normal_604dd8f38e722.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486987/normal_6046a3819093b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371787/normal_60478d47e04f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408873/normal_602d55590dfad.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/de76e7f1-15e3-4e18-bf97-03e60007cad4/41584573932.pdfIn PDF document text
    • http://gesonumakokobal.rf.gd/54994521212.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4a68b96-8bf6-4fd7-b1a3-201b67a11d4b/trig_identities_simplify_expressions.pdfIn PDF document text
    • https://be9ca920-c372-4566-b00d-544f92814f3b.filesusr.com/ugd/f0c5a9_7eb237884d924f30aab875eb82517eb6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b35431ff-e2e9-4d97-80e9-48df05efde54/best_heavy_metal_ballads_80s.pdfIn PDF document text
    • http://vejemomase.epizy.com/sap_certification_questions_and_answers.pdfIn PDF document text
    • https://6e8b94c7-278c-4a65-9c30-8d61c93a8f31.filesusr.com/ugd/9ff9b8_baa4247effa14377b914af57b637baad.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b849d43a-d32b-44c3-aa00-0625e15f6cf0/pentair_minimax_nt_400_parts.pdfIn PDF document text
    • http://keberugut.epizy.com/unconformity_geology_map.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED13 5276 bytes
SHA-256: aaa52a72f1ffcfa97a9a598d1544c99d210aa27f1e17857c333bc0c5083973c9
font_01_sfnt_off0000feec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEEC 11128 bytes
SHA-256: 688e789cb7081fea3cf2b2559ff5b3f931a155125e79549b15b18e9de3af8b4a

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