Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cbc7092b005e95c…

MALICIOUS

PDF

50.3 KB Created: 2020-08-22 02:54:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e0938e48288f8d479ae218eb376e1f9 SHA-1: fae8858bc8b0e7fc8b7188b9373f72c356341a28 SHA-256: 4cbc7092b005e95c497011510166021779250538f476ad0676f47fcda6f6dd8c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains a mass external link farm, with one specific link identified as a malicious redirector. The document body, though heavily obfuscated, contains the malicious URL. This indicates a phishing attempt designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.cc/pify?keyword=batman+who+laughs%2523+1 In PDF document text
    • http://files.freeshoestring.com/uploads/1/3/0/7/130775490/javusemolewu-fokugonages-losurete-wosuromageba.pdfIn PDF document text
    • http://palenuze.purplehorizonjewelry.com/uploads/1/3/2/6/132683130/wojekanitofakidila.pdfIn PDF document text
    • http://kadegigaj.karaites.org/uploads/1/3/0/7/130775075/kuvow-divusuzaduda-fanisoxalaveb-zejozutu.pdfIn PDF document text
    • http://wixexe.trupbsc.ca/uploads/1/3/1/0/131069869/4468639.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9906/8310/files/best_answer_for_conflict_at_work.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3680/1181/files/43972691543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2437/6227/files/chrome_for_pc_64_bit_setup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6885/9303/files/91173907317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2576/7320/files/limuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58085676994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/pamipubuwonon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7276/6630/files/levexepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0491/1006/files/69879174442.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6667/8686/files/silkworm_bombyx_mori.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_off000088ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88AC 5144 bytes
SHA-256: 5998efd680193376d4f0182cdcf5e082635b7f981662b9079e9d7af28f2b3f6f
font_01_sfnt_off00009a14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A14 10076 bytes
SHA-256: 9c31ccc0620ab1766be5943abc392d9d01f29570e3c1a8124b04044f92cf98e0

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