Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a29a8c5a01bb3ad…

MALICIOUS

PDF

42.3 KB Created: 2020-08-16 17:00:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 80a31df97d8e34feab64dc1171400f2e SHA-1: 7cde5bdfdc9b762a4b5ad833391ce1b41beb5f8c SHA-256: 5a29a8c5a01bb3ad5719490babffa98d88dc77bcc06a17f707201672e32eb913
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, disguised as homework answers. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources. The primary malicious URL identified is https://ttraff.cc/pify?keyword=inequality+word+problem+homework+answers, which is flagged as a malicious redirector.

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=inequality+word+problem+homework+answers In PDF document text
    • http://files.hendersonbagelcompany.com/uploads/1/3/1/4/131438069/xuforovefapiti_xijere_vesaruziluwoni.pdfIn PDF document text
    • http://bajotux.crimsonmist.com/uploads/1/3/1/3/131383309/9736991.pdfIn PDF document text
    • http://files.pregnancybirthbeyond.net/uploads/1/3/0/7/130775017/netemaxegagu_kifoz_sotisin.pdfIn PDF document text
    • http://files.debbiemorrison.net/uploads/1/3/2/6/132682076/caea708d514.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/1/0429/1140/0102/files/peluvuvorebikunujex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1941/0328/files/katezobazamuvonedojep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0631/0046/files/78993660982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7713/9613/files/15410533249.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/totavari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/65916468008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6620/4066/files/16540904505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8982/9800/files/7417982959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11147191401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9527/7974/files/forecast_spreadsheet_excel.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 7

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_off00006460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6460 5660 bytes
SHA-256: c3eef8280e8c90bc3aa8b41853215ac378bda29ce32284db5154ebc77bac4de3
font_01_sfnt_off00007777.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7777 10840 bytes
SHA-256: c122b390d830cce4ef970632aad69b044ed03798206390646e8e522464524a14

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