Malicious PDF — malware analysis report

Static analysis result for SHA-256 048578ea73724466…

MALICIOUS

PDF

73.5 KB Created: 2020-12-25 10:22:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 42505b96a6eb46906b53bf5c8e4c5e75 SHA-1: f2b9fdaab8e53e1b953a82284afadaad0ee36a6d SHA-256: 048578ea737244665daee466b2209acff89d2730adb0009573c2a0ab078d95f0
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a large number of external links, many of which are part of an SEO link farm designed to redirect users to potentially malicious content, as indicated by the URL 'https://trafffe.ru/123?utm_term=cochise+county+treasurer+arizona'. The document body is heavily obfuscated, but the presence of numerous external links suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://trafffe.ru/123?utm_term=cochise+county+treasurer+arizona PDF link annotation
    • https://cdn.sqhk.co/zexukobesu/0eiahch/wotaperenifogexixeg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474720/normal_5fa59a2cd70b9.pdfIn PDF document text
    • https://gapixupat.weebly.com/uploads/1/3/1/6/131637313/tamigorumaboloxuvogu.pdfIn PDF document text
    • https://mipixapotorifa.weebly.com/uploads/1/3/0/9/130969355/zakewukanexumusav.pdfIn PDF document text
    • https://mizavujubamu.weebly.com/uploads/1/3/0/7/130775062/5161225.pdfIn PDF document text
    • https://lomofoxagut.weebly.com/uploads/1/3/4/5/134524577/5604439.pdfIn PDF document text
    • https://nilemesobipefuj.weebly.com/uploads/1/3/2/3/132303022/6252087.pdfIn PDF document text
    • https://nobokoxevukaj.weebly.com/uploads/1/3/4/7/134755509/64952.pdfIn PDF document text
    • https://danovijo.weebly.com/uploads/1/3/4/7/134774389/6894568.pdfIn PDF document text
    • https://lebotisoko.weebly.com/uploads/1/3/4/5/134597635/9752796.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496204/normal_5fe3ded24e231.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/zetare/agastya_samhita_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/60641047296.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/graphic_design_the_new_basics_2nd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/kemimatanezanisojini.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_off0000e238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE238 4912 bytes
SHA-256: 6866b5eab0e901477d2a59f2d5cdcb52eef97ce0e9d96baa9ed19c04e6ffb2b5
font_01_sfnt_off0000f2f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F3 11184 bytes
SHA-256: 4c05c9e57c3b7a424e6d362e37cb48b0c90f182ff6ff07967a008f34c5804bae

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