Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab71fcf4f249d4cf…

MALICIOUS

PDF

43.8 KB Created: 2020-08-19 16:32:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 945017cdefc717653f509aeae999c236 SHA-1: 5b5dbc6ccad2d04630b4538f25349871bd14de9b SHA-256: ab71fcf4f249d4cf6187f2ee566ddf2422bdac769aee841492b75b8cdc657293
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious domain, disguised with text related to 'brain teasers worksheets for adults'. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to obscure the malicious redirector. The primary malicious IOC is the redirector URL.

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.com/pify?keyword=brain+teasers+worksheets+for+adults In PDF document text
    • http://files.genuinecollection.ca/uploads/1/3/1/3/131379042/rarafara_fumojazamelupok.pdfIn PDF document text
    • http://xedireraf.alekstinapoodles.com/uploads/1/3/1/6/131637309/keruge.pdfIn PDF document text
    • http://xewor.rmccartney.com/uploads/1/3/1/4/131438025/7cb1bb0d1b.pdfIn PDF document text
    • http://files.neilfoley.info/uploads/1/3/1/3/131398560/mekarudus-tugat-raludujaj.pdfIn PDF document text
    • http://files.addictionsss.com/uploads/1/3/1/4/131407406/fugej-letuwalibisumeb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/12882457098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4839/3112/files/salonokezopebaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8788/6488/files/16889293474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4818/9603/files/mezijerenusigubawajatit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4786/9850/files/70475664773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5544/7202/files/tapakinakobuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8323/5489/files/kiluwitufot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8575/7606/files/26271442476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/present_perfect_simple_and_continuous_exercises_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7103/5809/files/89829348735.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
🗂 Part of campaign: genuinecollection.ca 3 samples

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000060a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A3 5084 bytes
SHA-256: 19067c6ae6508af5eb6d8ecccd461df9f5daea993de15a7e46b211fa740c4ac5
font_01_sfnt_off000071ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71ED 10060 bytes
SHA-256: 417a3a2d0f800413ff261ee8b418aa808e57b69c8a56128d42aabf2f79c68c4d
font_02_sfnt_off0000945e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x945E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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