Malicious PDF — malware analysis report

Static analysis result for SHA-256 424fcf334f9f7954…

MALICIOUS

PDF

53.8 KB Created: 2020-08-07 13:42:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 517fc1fbc4c72d8836caf94229df79ce SHA-1: be06ed8dbc5e1bfcea893dd716a73402161bf132 SHA-256: 424fcf334f9f79543f52246f7eb9a9e9b06cf78ae0ca397ecebdf72e583fbf02
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to what appears to be a link farm designed for SEO manipulation. One critical heuristic identified a link to a known malicious redirector infrastructure at `ttraff.ru`. The document body, though heavily obfuscated, contains this same URL, suggesting the primary intent is to redirect the user to malicious content. 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=analytical+chemistry+gary+d+christian+pdf In PDF document text
    • http://files.peterdeshane.net/uploads/1/3/1/4/131438228/4238033.pdfIn PDF document text
    • http://dedutuxux.wesleyofyakima.org/uploads/1/3/0/7/130740069/watonawe.pdfIn PDF document text
    • http://files.redseaem.com/uploads/1/3/1/6/131636916/9135664.pdfIn PDF document text
    • http://fomefobo.buttermilkbrook.com/uploads/1/3/1/3/131398140/2948007.pdfIn PDF document text
    • http://files.tear-a-page.com/uploads/1/3/0/7/130738714/simeminom_rujozugexezaw.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/1/0435/2009/8472/files/11281905155.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56751463133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3484/5079/files/dofonesetin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7194/7423/files/susipabejurujubus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7773/0464/files/kedigivelorawifotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5813/4168/files/netaji_open_university_assignment_cover_page.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8396/4324/files/ragafunulifikuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6549/2127/files/46911753364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9456/3229/files/stepper_motor_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4474/1015/files/photoshop_cs3_torrentino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4172/6370/files/vapuzuzovivapefajulurit.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 4

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_off0000877f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877F 5660 bytes
SHA-256: 878ac0b891414b7054640b1fd5a296fccc3c20c7e4f32eca8459bfabb223593b
font_01_sfnt_off00009aa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA8 15148 bytes
SHA-256: 97330e73e2ac06b96bd773ff7686645720bba8e65d95e42240ce16c0f8248532

Open this report in the interactive analyzer, or submit your own file for analysis.