Malicious PDF — malware analysis report

Static analysis result for SHA-256 239854cec73dd996…

MALICIOUS

PDF

44.4 KB Created: 2020-08-02 11:58:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 91c7cecc5b3b0f11cf2f31f4257ad9ee SHA-1: f10c965b25afe8013e30076f7ed1ce3dbc3d4414 SHA-256: 239854cec73dd996d6608cfbb80b77373549b3399465dcb1cecc821b2997cbdf
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to external PDFs hosted on Shopify. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure via the URL https://ttraff.ru/pify?keyword=south+bend+9+lathe+manual+pdf. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious sites. No scripts were extracted from this sample.

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=south+bend+9+lathe+manual+pdf In PDF document text
    • http://files.coloredessentials.com/uploads/1/3/1/3/131380299/kunukudagutokefi.pdfIn PDF document text
    • http://files.oakstreetnurseryschool.com/uploads/1/3/1/8/131871740/5096382.pdfIn PDF document text
    • http://files.syncdental.net/uploads/1/3/0/7/130775862/jizorovivemuji.pdfIn PDF document text
    • http://files.thetherapyspacechelmsford.com/uploads/1/3/0/9/130969469/07fa249.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/1/0436/4389/5966/files/37222675796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0386/2440/files/vefamomal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sasexenumufuxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8993/5002/files/nataliruminekugapa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2914/2426/files/37521866751.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/17870446456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/dikipet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1556/1638/files/rezejuxexugiko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7437/8138/files/50768707307.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9541/5189/files/86572827625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/bersa_380_plus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2767/7852/files/novonulozo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2988/8161/files/list_of_random_objects.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 7

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_off00006d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D84 5404 bytes
SHA-256: 51b47a64500a6369458b1f3eae95f5b873f20dc0e8143f3e31c4967988a74434
font_01_sfnt_off00007fc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC3 10808 bytes
SHA-256: 1243072d647009ca66015052a83bcbec3053dd0eb1fcd71edde4707d9ab2c16d

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