Malicious PDF — malware analysis report

Static analysis result for SHA-256 47c30e9f8d0131ab…

MALICIOUS

PDF

82.5 KB Created: 2021-01-07 23:54:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e9cf83d6827a46906d7dbd377c0e4d43 SHA-1: 87ef1d5100af921934ac8de3a1c47eeb1960c9a3 SHA-256: 47c30e9f8d0131ab7ee48262a8c05322226f50bc231e2ae985b8e1b9a9b8f1d9
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. While no scripts were explicitly extracted, the PDF structure and external links are indicative of techniques used to redirect users to malicious sites.

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://trafffi.ru/wb?keyword=bass%20pro%20shops%20black%20friday%20deals PDF link annotation
    • https://ruparowix.weebly.com/uploads/1/3/4/3/134350000/909a8a.pdfIn PDF document text
    • https://zilavexeredora.weebly.com/uploads/1/3/0/8/130874610/46031f6ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380680/normal_5fc210bdaba26.pdfIn PDF document text
    • https://denepuwukofakar.weebly.com/uploads/1/3/4/3/134316944/zasadufe-kokesugavap.pdfIn PDF document text
    • https://rolafaxamowoti.weebly.com/uploads/1/3/4/9/134903079/benuvobe.pdfIn PDF document text
    • https://pewarefat.weebly.com/uploads/1/3/4/3/134361746/bawabavegom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484154/normal_5fae4b401c04f.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/rovuweraja/google_digital_marketing_certification_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/sipofurowikatisi.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/kelidirijudowedumatajitol.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/bitter_moon_tamil_dubbed_hd_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/black_amoled_wallpaper_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/aimee_semple_mcpherson_biografia.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_off000103fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103FA 5600 bytes
SHA-256: 205544f0fbeaa00134534687b4a8cbbcfce1610162a71f13c8bff274af5ec042
font_01_sfnt_off000116ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116FF 11316 bytes
SHA-256: 6d78e69ffb39f54b62d558fdf780c07f33c6a9b847cb3741a8b94aae4661c0b3

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