Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec3262146cd70880…

MALICIOUS

PDF

43.7 KB Created: 2020-08-05 13:14:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 654dc5110de2a34a8d57925079da8ba1 SHA-1: bffa0dd7d29de0a645f49d6b6384eb86bd7714ad SHA-256: ec3262146cd70880b37bc4ccb4c4a185ed3c93bdb689ef6ecb2a7fd192e3a9ed
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL identified is https://ttraff.ru/pify?keyword=probability+equations+pdf. This suggests the document is designed to lure users to a malicious site, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of direct payload execution.

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=probability+equations+pdf In PDF document text
    • http://files.moldova-ministry.org/uploads/1/3/0/9/130969565/6972158.pdfIn PDF document text
    • http://files.torahfun.us/uploads/1/3/2/6/132681698/ropagudefasulu.pdfIn PDF document text
    • http://files.highquest.info/uploads/1/3/1/4/131410479/2222988.pdfIn PDF document text
    • http://files.eastworship.org/uploads/1/3/0/7/130740412/jumorusuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5959/2864/files/halo_glasslands.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1896/0541/files/42163731451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8491/3565/files/sizanuputibenaxabobem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2187/6900/files/68388064695.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1241/3851/files/2367950893.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/71751799630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8942/0695/files/bioremediation_meaning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45035229099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5235/8042/files/18171360892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9425/2456/files/personal_budget_definition_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/72028702275.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1D 5284 bytes
SHA-256: 6986a266ac60a2d2cad1c1084b9e02950a875cc7ca646e1bc58595f797323918
font_01_sfnt_off00007115.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7115 10240 bytes
SHA-256: c3d14b66ddc4e159085e29d6b3797f5cb352ef5ebf82a77a5a12a3f4b9e02788
font_02_sfnt_off00009425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9425 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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