Malicious PDF — malware analysis report

Static analysis result for SHA-256 7305f20f1b686d1c…

MALICIOUS

PDF

42.4 KB Created: 2020-08-08 03:29:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 97920e7b0a46c025b4a967b9917cf698 SHA-1: 4ff938db44f53f3e02d0ad1adf70ce9070d539af SHA-256: 7305f20f1b686d1c4d70808039275b928763bcb0201442bb81909c2fe947992e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm designed to redirect users to a malicious site, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The primary redirector URL is https://ttraff.ru/pify?keyword=amalgamation+of+partnership+firms+pdf, which is likely part of a phishing or scam campaign. No scripts were extracted, but the document structure and embedded URLs strongly suggest a social engineering attack.

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=amalgamation+of+partnership+firms+pdf In PDF document text
    • http://files.theshepherdsacademy.com/uploads/1/3/0/7/130739783/7889346.pdfIn PDF document text
    • http://files.dagsforsale.com/uploads/1/3/0/7/130776183/b521322.pdfIn PDF document text
    • http://files.kemvar.com/uploads/1/3/1/8/131871605/befulidutideza.pdfIn PDF document text
    • http://files.poplarridgecommunitycenter.com/uploads/1/3/2/7/132740260/gajumunebipoja.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/1/0434/0105/2321/files/38600425206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2359/7725/files/94755984242.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6980/9564/files/26354843400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/28366968223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/29659139179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6761/3077/files/7702737739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6786/6265/files/82957317395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/benedict_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0564/8807/files/curriculum_vitae_format_for_freshers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/29481540721.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/fupowimupuz.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 1

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_off000066c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66C5 5444 bytes
SHA-256: b32ca0fac46e95d471427942d575e15e9a5c549029b837e049b88750b5e464fa
font_01_sfnt_off00007918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7918 10324 bytes
SHA-256: 4875eb400f1aa305a5f5e29e87e256df9feefdde8f63f5039cf45ed157978c0a

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