Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2c19191ad667a74…

MALICIOUS

PDF

47.9 KB Created: 2020-08-04 10:50:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5c0d43e78a18c975c64668e67b39c13 SHA-1: 337025ffedc72b9c0054512e6963d0cc3ba49158 SHA-256: c2c19191ad667a74edee2af605c894c648705f38eece6a60a75389ab73414e96
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. 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=hidradenitis+suppurativa+nhs+pdf In PDF document text
    • http://files.awaveofhealthymeals.com/uploads/1/3/0/7/130738801/nepunewuduw_bidupowuvaz_pipifedugi_tavotexe.pdfIn PDF document text
    • http://files.crossroadscowboy.com/uploads/1/3/1/6/131606605/mudeguxojoxu-sinigafilefavuz-bagubulumirav.pdfIn PDF document text
    • http://puwax.graingercountytomatofestival.com/uploads/1/3/2/8/132814930/5126511.pdfIn PDF document text
    • http://files.hwy27yardsale.com/uploads/1/3/0/7/130775588/5ba189767a.pdfIn PDF document text
    • http://files.grandmaceilshouse.com/uploads/1/3/1/4/131408529/92347f03614c5.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/1/0433/2313/0009/files/nys_contract_reporter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1347/8312/files/nozoguvonuzaxupux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8531/5737/files/vuzujomovot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/95323393735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0096/2977/files/39521774067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5131/0488/files/39510823691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3022/3775/files/lazekemedisutelos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4832/1692/files/gifibujarogegorotelaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75130531250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/87795491405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5383/2609/files/practice_it_answers_bjp4_self-_check.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7822/files/zisevimuwusegeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1966/4541/files/rejoluzeledadeneridaweko.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_off00007c44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C44 5120 bytes
SHA-256: cdd91c8c5b41d15434d9f43dc879fb3ad32953759f3a4ea35aa0de1d8ed93dba
font_01_sfnt_off00008db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB0 10168 bytes
SHA-256: 8c60c1877f7c6f16d576c93a868a2fb1ff91fdb2a5f3301d39b45788014fd62c

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