Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c94644fc4efe2dd…

MALICIOUS

PDF

41.4 KB Created: 2020-08-22 01:38:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a0723a096641aa3eb9572feeb78894d SHA-1: 751394da41ccd042a22f824471b14d5a7519e8b7 SHA-256: 9c94644fc4efe2dd24ffd46b286fcd2f9089dbff3eb9756df323b7aecd7fd2a9
194 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links directs to a known malicious redirector at ttraff.ru, disguised as an educational worksheet. This indicates a phishing or social engineering attempt to redirect users to malicious infrastructure.

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=earth%2527+s+changing+atmosphere+worksheet In PDF document text
    • http://files.nanomat-conference.com/uploads/1/3/1/4/131453194/e50ee650.pdfIn PDF document text
    • http://files.ijbe.online/uploads/1/3/0/9/130969184/rudawowejon_jemulek.pdfIn PDF document text
    • http://files.prideandjoymonogram.com/uploads/1/3/1/3/131379054/migatezilolawizuzen.pdfIn PDF document text
    • http://wewavazi.meghannrader.com/uploads/1/3/1/4/131482975/747a0ebc9b.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/1/0431/3631/9639/files/56356325676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/68265010242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5495/6695/files/28606983057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8872/2587/files/rajugogabe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6731/8167/files/wow_classic_aoe_grind_spots.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9182/0711/files/rufagixuzararak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/97260170275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/mikisoteside.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6835/8807/files/27047910789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3853/8904/files/83740456408.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 6

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_off000063bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BB 5460 bytes
SHA-256: 0ab21f2d4a96c950de6a18cf4dc5b11bd38900ad1bd18133ef8ef69710d241d3
font_01_sfnt_off00007641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7641 10120 bytes
SHA-256: 96a497005f6d6c428ace788224e22ab6e5a9f4859b23442a92ff78fa9c665f05

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