Malicious PDF — malware analysis report

Static analysis result for SHA-256 b82d9e73acc5ebcd…

MALICIOUS

PDF

46.6 KB Created: 2020-07-24 21:33:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab864ee67cc2049ca01a6d01601eb316 SHA-1: aab657e36152b8a47e2ce6854b73263d25a16aa2 SHA-256: b82d9e73acc5ebcdb787597d0f618b00d6c7cdae78f54c53d3cedca786ceeb4b
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits a PDF link farm heuristic, with numerous external PDF links, many hosted on Shopify. The ML classifier also strongly flagged this PDF as malicious. The document body appears to be malformed or truncated, preventing a more detailed analysis of its content's intent beyond the observed redirection and link farming.

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=shinesoft+broadcasting+software In PDF document text
    • http://files.frczyouth.org/uploads/1/3/1/3/131384679/wupeveteter.pdfIn PDF document text
    • http://files.monkeymadnessfunbus.co.uk/uploads/1/3/2/7/132740375/9516346.pdfIn PDF document text
    • http://files.christophermnelson.com/uploads/1/3/0/9/130969313/nijuzapi-vexavebazumu-jujinijoxutu-kupok.pdfIn PDF document text
    • http://files.deathandseparationbook.com/uploads/1/3/2/6/132682039/5419355.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/1/0437/0500/8293/files/72958596495.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/dexezuduwerawomogefek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/nisupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/43235939031.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3603/0614/files/zowadasexunobetojute.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8570/8953/files/wuzutokuregebaki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/buxidumex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5391/6053/files/26430578824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/gilit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lunizededalusabunis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3087/9125/files/bujan.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 6

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_off0000771c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x771C 5376 bytes
SHA-256: b98d557051d9ef5282117bcb8eb0cc967a53ac8808cdfec1bad87c4c3176c5e3
font_01_sfnt_off00008955.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8955 10588 bytes
SHA-256: a2b9ce68d7a3249bead13c713380c329a72b48171cba7b30e2b4a48ce9403add

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