Malicious PDF — malware analysis report

Static analysis result for SHA-256 62d3313b61a44fa3…

MALICIOUS

PDF

72.1 KB Created: 2020-11-25 17:20:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 237101e9eaca455fa1c66b7aec7d414a SHA-1: 3b1b353b66123662c851311aafd01217259d8135 SHA-256: 62d3313b61a44fa36c9b3bd13050e90b868175c424492b5a075aaf512bfb9d83
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection mechanism. The heuristic 'PDF_SEO_LINK_FARM' and the ClamAV detection 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0' strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL 'https://trafftec.ru/strik?utm_term=print+release+form+free' is a primary indicator of the malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://trafftec.ru/strik?utm_term=print+release+form+free PDF link annotation
    • https://jopojikifereter.weebly.com/uploads/1/3/4/5/134519769/1352789.pdfIn PDF document text
    • https://misikeni.weebly.com/uploads/1/3/4/3/134336029/7304821.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/6069273.pdfIn PDF document text
    • https://komavumi.weebly.com/uploads/1/3/0/7/130738531/nujoduperora-rinuziki.pdfIn PDF document text
    • https://bevugatumuga.weebly.com/uploads/1/3/4/3/134316863/7046924.pdfIn PDF document text
    • https://xameramavojipav.weebly.com/uploads/1/3/4/2/134265998/dorazevi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/rorives/zojafutunerosavas.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/wetesi.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/v_buck_generator_no_human_verification_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/52086351667.pdfIn PDF document text
    • https://s3.amazonaws.com/vokeri/34977732735.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/nutrition_an_applied_approach_5th_edition_free.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD364 4704 bytes
SHA-256: f4ee5a74414c25a3249d976c418454ce82211eb4b7108407478c09746832e72d
font_01_sfnt_off0000e32e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE32E 10036 bytes
SHA-256: 80a191a5636bc05326c1e5c884d5da2a3f9ad0f85b6157d5cfc778349dc80fa6
font_02_sfnt_off00010599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10599 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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