Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5cbccceddee34a9…

MALICIOUS

PDF

72.0 KB Created: 2021-02-12 22:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2a89479e92660f94db2f95182b6132f8 SHA-1: 16a53ee0d76c7524563dc086f7f3d7e1337708eb SHA-256: a5cbccceddee34a9df289cf1f6423cd927ed9c4bf91bb8b6690c51abc66370d7
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, specifically 'https://baarspo.ru/wix?keyword=test+drive+unlimited+2+bike+mods', suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are commonly used for spearphishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=test+drive+unlimited+2+bike+mods PDF link annotation
    • http://rostov-mobile-doctor.ru/flash_website_templates_for_photographersqphq0.pdfIn PDF document text
    • http://front-glass.website/fularunewomefuketamifebifs6dua.pdfIn PDF document text
    • http://my-favshoph.online/mefuwojok0mao1.pdfIn PDF document text
    • https://wuvozova.weebly.com/uploads/1/3/4/5/134500004/zelubanalun.pdfIn PDF document text
    • http://neyroskakalka.site/kifogutirutupivawulijapuo6k7w.pdfIn PDF document text
    • https://vozozexofevufut.weebly.com/uploads/1/3/1/8/131871902/3c062e948c4ee2.pdfIn PDF document text
    • https://gigerexug.weebly.com/uploads/1/3/5/3/135341911/1a404c2.pdfIn PDF document text
    • https://girakojazesu.weebly.com/uploads/1/3/4/6/134675992/fabutazu.pdfIn PDF document text
    • http://znatural.space/zafalamumawijifa0rea9.pdfIn PDF document text
    • http://trysoda.pro/dsm_synology_user_guideln1kc.pdfIn PDF document text
    • http://richteam.site/580945801781n7mb.pdfIn PDF document text
    • http://ogranicbio.space/gi_vn_ht_sheet2nq95.pdfIn PDF document text
    • http://muldwych.com/luxitafubusapobiwusegebmnzed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sivanira/wejekuwof.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/favorites_list_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/gakon.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/fawosefedotix.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_off0000dd6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6A 5104 bytes
SHA-256: 4327c14d5c9b8f058bc9e13739ae7bd7debbe2749da4944c669c0e47a8f48826
font_01_sfnt_off0000eeb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB9 11048 bytes
SHA-256: 6abb92e5cf37ae8fb966d50207e07abd7f94f45d563aab4623dd38caf55ea43f