Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3c71d495fdb2fce…

MALICIOUS

PDF

37.2 KB Created: 2020-08-20 23:18:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6e736eb9a09b2b033916b6f31b40b8d SHA-1: e504cb747b1e742b5e9aa8bf3b6a11025e5572d1 SHA-256: f3c71d495fdb2fce4595d24a7cd7ae34df81948013eb44daeda43d7943910e83
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirect. This suggests the PDF is designed to act as a link farm, ultimately directing users to malicious infrastructure.

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.ru/pify?keyword=craftsman+lawn+mower+manual In PDF document text
    • http://files.mazamo.co.uk/uploads/1/3/2/6/132682897/rufub-rinizuki-peniwajisiwoxem.pdfIn PDF document text
    • http://files.artofmoses.com/uploads/1/3/0/9/130969981/3005476.pdfIn PDF document text
    • http://files.bluenosewoodworks.com/uploads/1/3/2/6/132681880/b0f078.pdfIn PDF document text
    • http://files.womansclubofspringlake.org/uploads/1/3/0/7/130739674/gobalan.pdfIn PDF document text
    • http://files.nabhanlaw.com/uploads/1/3/0/8/130815277/vunemowajemote-kotadijotoras.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/1/0433/8604/4570/files/76160492444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7201/9877/files/gefirilazaxukuvil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5084/1750/files/sapomomeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6112/5025/files/ccmb_phd_entrance_exam_question_papers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1217/7572/files/97442072986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5652/8541/files/amenaza_de_aborto_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7325/7118/files/50256143774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0944/0924/files/pokemon_yellow_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3436/1508/files/76037220142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7290/3585/files/kilo_to_lb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2839/7728/files/98747395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3914/6662/files/liduwuwowuvafoduxutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0583/6438/files/69317931613.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_off00005541.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5541 4912 bytes
SHA-256: 6ad6d8a7939ea3a42198b0e8ee9df66c9372a0f9bd01e860e3b40dc4685e4048
font_01_sfnt_off000065eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EB 9992 bytes
SHA-256: 086187c3f6ec6b4c884c28da15e78a7f783a1a252136171f958687abbd5c3c3b

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