Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4d706217143f1f0…

MALICIOUS

PDF

35.4 KB Created: 2020-08-02 17:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f5c1778f212f776eb18a6d4e772a9e6 SHA-1: 8ab3d833a61238d40843bfd7a1bc47afd9ae27e1 SHA-256: c4d706217143f1f067ff099cf0d0ff3ef094c32a3f6dc5bd26fda89d0f07e9bf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic identifying a malicious redirector. The document body also contains a URL pointing to a redirector service, which is likely intended to lead the user to a malicious site. The presence of a large number of external links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

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=fortran+95+2003+for+scientists+engineers+pdf In PDF document text
    • http://files.musketeersgolfsociety.com/uploads/1/3/0/7/130740090/vetegevupotixo-vobonerivez-saberawafupipaz.pdfIn PDF document text
    • http://files.djindyproductions.com/uploads/1/3/0/9/130969576/weful.pdfIn PDF document text
    • http://files.igorkoruga.com/uploads/1/3/0/8/130874593/14da8133a.pdfIn PDF document text
    • http://files.dsjones.org/uploads/1/3/1/1/131163976/sokuvatotufonabokig.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/1/0434/6321/3209/files/gebezowuwolinarojim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/8609020064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6346/7414/files/76928105026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3106/files/rakuwasugewijixoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/59988727655.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4294/6728/files/56084842272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/24667250447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/77351587987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0848/2724/files/wonajeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/nedelovivaleg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9704/6696/files/41797925924.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/80692535751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/39659112649.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3282/7288/files/xepugazuw.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 3

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_off000049fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49FB 5964 bytes
SHA-256: 164002ed513a833241e08a9183bf2a52c58e453e887760235b79c6f8bd912e21
font_01_sfnt_off00005e56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E56 10020 bytes
SHA-256: 65389e9da371597afb24dccdcb0d2be0850339e77d4d6bf472b43c76cd8c95a1

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