Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d4ad88b482797cd…

MALICIOUS

PDF

47.9 KB Created: 2020-08-18 21:30:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dec1be66a5f56325a323e2edddae7343 SHA-1: 19493da35ec4b2f827bf14ce82299c7572189bec SHA-256: 6d4ad88b482797cd70c8935d408eb19b8d931bfebf53fca52eaab7ba5a3be7f7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains numerous links, many of which point to a redirector infrastructure associated with SEO link farms and phishing lures. The primary malicious link, https://ttraff.ru/pify?keyword=pc+full+form+in+engineering, is designed to trick users into downloading potentially malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or malware distribution attempt.

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=pc+full+form+in+engineering In PDF document text
    • http://files.jackandjamesapiaries.com/uploads/1/3/1/4/131437423/kosikuxerebedebuw.pdfIn PDF document text
    • http://bonuzozat.diamondcb.com/uploads/1/3/1/4/131483281/5b6b00d15ed.pdfIn PDF document text
    • http://files.bradleystokejudo.com/uploads/1/3/0/7/130775180/6614301.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/1/0435/4444/5092/files/angola_janga_download_completo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3669/files/wumulij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6894/7616/files/nexidari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8468/5224/files/suxawuwirunagizemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/tezatozimegesubibibiwuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8466/1414/files/archicad_15_library_objects_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7572/1633/files/gikuzom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8031/1203/files/sufilinorirug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6427/8686/files/aqua_unit_patrol_squad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5655/4394/files/81887873169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/wuxizevupavizaxarunag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7399/4905/files/82852514516.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_off000076a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76A5 4816 bytes
SHA-256: b17f8e85e6fb2e7aad3dd4c687e7422f8a5497f4d9884d3449578e503be77ecc
font_01_sfnt_off000086e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E9 14196 bytes
SHA-256: 4de55e0d4e08a5031159c64a8a777d50fe745e9e022a7eb1c748ec08efe88730

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