Malicious PDF — malware analysis report

Static analysis result for SHA-256 42baee1b85e787c8…

MALICIOUS

PDF

68.1 KB Created: 2021-02-28 13:32:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: c36aa4f1e1f7b9337fb40e3f836f5b10 SHA-1: 2ca7919145d3139e3a568ed8620d04ed8f994513 SHA-256: 42baee1b85e787c8aa4330d61e2cf85970fdbe574a5925a135725f2494d2df34
252 Risk Score

Malware Insights

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

This PDF file contains numerous links to external websites, many of which are identified as malicious redirectors or part of link farms. The document body, though heavily obfuscated, suggests a lure related to a song title, likely to entice users to click on the embedded malicious links. The presence of PDF-specific heuristics for malicious redirectors and SEO link farms strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9710

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=trolls+dance+song+can%2527t+stop+the+feeling In PDF document text
    • https://guvolobojifo.weebly.com/uploads/1/3/4/7/134733869/34a6ff.pdfIn PDF document text
    • https://zurobalunaxul.weebly.com/uploads/1/3/2/7/132712088/rufezalawataboduguk.pdfIn PDF document text
    • https://dopesitelubi.weebly.com/uploads/1/3/5/3/135307477/6962747.pdfIn PDF document text
    • http://am-sound.ru/bible_study_from_genesis_to_revelationixsjk.pdfIn PDF document text
    • https://tavutafaj.weebly.com/uploads/1/3/1/4/131482866/gasal.pdfIn PDF document text
    • http://lnstagram-blue-ticks.com/29887023291kp3d8.pdfIn PDF document text
    • https://rejovofutilux.weebly.com/uploads/1/3/1/4/131484728/xetusigemovo.pdfIn PDF document text
    • https://teguvazotumeli.weebly.com/uploads/1/3/4/0/134041540/e0625f4df.pdfIn PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/rugumiluzaxatas.pdfIn PDF document text
    • https://faxufoxexukixel.weebly.com/uploads/1/3/4/4/134455740/wurunewi.pdfIn PDF document text
    • http://eduha.online/kikatpvhwf.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/rupatojuko/56046064979.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/what_does_you_chalk_it_up_mean.pdfIn PDF document text
    • http://vafukibugaf.epizy.com/how_much_does_getting_your_cdl_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/traxxas_velineon_vxl-3s_esc.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/nafuzorobejifaj.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fc80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC80 5188 bytes
SHA-256: 5903f7a619fa8e31db5dc89cdb8f27693bd312b4a319b1f55df37697cb6c68ed

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