Malicious PDF — malware analysis report

Static analysis result for SHA-256 1da21452f30a4e25…

MALICIOUS

PDF

43.7 KB Created: 2020-07-31 19:56:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 60e3329b3a6a35003475d3d7d6b9688e SHA-1: 225a328fea55818ceddab5f91ed276fa036b98ac SHA-256: 1da21452f30a4e25233de64f4c47d4ba5452b3715a61782e5f1e29b27e8d4ad7
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 of which point to benign Shopify URLs, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to lure victims. The document body, though heavily garbled, contains the URL https://ttraff.cc/pify?keyword=discrete+mathematics+5th+edition+pdf, which is flagged as a malicious redirector, indicating the primary intent is to lead users to malicious content.

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.cc/pify?keyword=discrete+mathematics+5th+edition+pdf In PDF document text
    • http://files.uhsguidance.com/uploads/1/3/0/7/130740368/womag.pdfIn PDF document text
    • http://files.thelawnandgardengeek.com/uploads/1/3/2/7/132712623/segitezu_malolizoki.pdfIn PDF document text
    • http://files.allegrezzasingers.com/uploads/1/3/1/6/131606486/digipirogupavo-xuwod-rajiradetoreduj-jufafubogikeli.pdfIn PDF document text
    • http://files.wildlifeecology.org/uploads/1/3/0/8/130814594/9952308.pdfIn PDF document text
    • http://files.oregoncma.org/uploads/1/3/0/8/130813645/1364540.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/1/0433/0687/7080/files/526428265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nemubowakupupoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9054/2743/files/sufavizepoxujiravoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/37285266122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0990/8637/files/tugenewewasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5597/2501/files/kesaxivoriwitejejujuworo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/zezulubewafozito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/kilukugusuwafewolodupepab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6949/7753/files/sevimased.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99231100330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8990/3264/files/68895366220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0441/8455/files/vubaju.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_off00006bee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BEE 5488 bytes
SHA-256: af39a04726e2548a496d95fb2ed6050c67d7e97ce46ed1cd639917b32737e3bb
font_01_sfnt_off00007e74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E74 10488 bytes
SHA-256: 44d6a37c70faacd7efe84b6891ebfabce34cd55646180991929069053b556ea6

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