Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a5f95e05d7081a0…

MALICIOUS

PDF

39.3 KB Created: 2020-08-24 22:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c511e3bc6297e8279f6405816414e3fb SHA-1: 9d6825bc2c4a16b223e2ee5e4067992c14af810a SHA-256: 7a5f95e05d7081a0872d6a5ee9644ef53d61226b71fef4b832e9575ad0bd7a15
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a mass of external links, many pointing to a redirector service (ttraff.com) which is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be a lure for academic materials. This suggests the PDF is designed to drive traffic to malicious infrastructure, likely for phishing or malware distribution.

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.com/pify?keyword=cambridge+a+level+economics+past+papers+answers In PDF document text
    • http://files.bainbridge-ny-rotary.com/uploads/1/3/0/8/130873829/9573480.pdfIn PDF document text
    • http://temaj.akadeltaomegaomega.com/uploads/1/3/1/4/131438044/d8a46.pdfIn PDF document text
    • http://gukubuwa.ellenjewett.com/uploads/1/3/2/7/132712615/066f034613.pdfIn PDF document text
    • http://files.millshillbaptistchurch.org/uploads/1/3/0/7/130739991/f388ee2fc70420.pdfIn PDF document text
    • http://jejabo.firstfirebirds433.com/uploads/1/3/2/3/132303052/7986640.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/1/0432/5274/4356/files/cancer_de_colon_derecho_e_izquierdo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/32643410700.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/quadratic_equation_formula_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9246/7109/files/zadokodavavuxozugititoxut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/98572357872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4469/9288/files/emotions_and_feelings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/gufibotu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3137/9619/files/dekixunejibedid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5586/5243/files/37920627929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0437/7763/files/wogofugenupuroju.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_off00005726.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5726 5588 bytes
SHA-256: 4d444e9ed03eb24f31261dd5f5d851412cf044b939ae0e4c008cce029f918c1c
font_01_sfnt_off00006a22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A22 11536 bytes
SHA-256: bcff6d9ad3d4be57a7d7253d7266241d91214822b57c97e6937376fd67a0362f

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