Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a63dc1a1d3d8987…

MALICIOUS

PDF

39.8 KB Created: 2020-08-02 16:30:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c92b4cdd292dd16bc76d925ad215712d SHA-1: 8227b05bd337e2b4e3573e6989a6e6f44b2b2633 SHA-256: 1a63dc1a1d3d898794a5d77ad791a8f61c29cad4c80bba3987ab14ecec0d025f
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body also contains this URL, along with a large number of other URLs hosted on Shopify and other domains, suggesting a link farm for SEO poisoning or phishing. The ML classifier also strongly indicated maliciousness.

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=franklin+county+dog+license In PDF document text
    • http://files.ashleyknappenberger.com/uploads/1/3/2/8/132814306/mufololosajo-zewunewarupoj.pdfIn PDF document text
    • http://files.kingmanaussies.com/uploads/1/3/1/4/131437676/varomogemudare.pdfIn PDF document text
    • http://files.precisionriflecompany.com/uploads/1/3/0/8/130874284/poludufigorot-ludugobakabab-warusizo-ripupiwejeg.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/1/0428/4992/7327/files/gibuwawita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2779/9957/files/unity_jiggle_bones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4473/2065/files/46180003172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4330/files/92914453055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7540/3936/files/65059152883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/44212136484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1063/7476/files/47606280059.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8000/0423/files/28157437797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4496/9367/files/26033765317.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5013/files/dojexin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/wimusokefodilajapixexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9978/1275/files/bafali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/jaguxe.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 5

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_off00005c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8E 5228 bytes
SHA-256: 57ff7937d8821bba86ccb6f87a37a37eb24ef6d6b7c6f798edd75c9a7015e5a6
font_01_sfnt_off00006e72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E72 10456 bytes
SHA-256: e35c81e45cb2d9b69d2d3ac34ebac0f9c5431169e7f30d1d870c4651c15d28fc

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