Malicious PDF — malware analysis report

Static analysis result for SHA-256 64b8e6240140c21e…

MALICIOUS

PDF

84.9 KB Created: 2020-09-08 16:27:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7aa518a9ac601975dea47c88386772bb SHA-1: 406f874fa768f8ff630beebaaedb3c6ea91a6339 SHA-256: 64b8e6240140c21ef816d4c7fc5927a2480b18a26055af768f035031e3fa491a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirector links and SEO link farming, pointing to a free-download phishing lure. The primary malicious URL, 'https://ttraff.ru/wix?keyword=transformers+last+knight+autobots', is identified as a redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit vulnerabilities or redirect users to malicious content, aligning with common phishing and malware delivery techniques.

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/wix?keyword=transformers+last+knight+autobots In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static.usrfiles.com/ugd/de9003_e377f7d7a0284483a5e7f47772c5c412.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/3f8d85_2409bedd8ad64f519030b49097288ef6.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/9ef1ea_17a74a27026b4c64a77d1d82d6063ca9.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/de60da_45431c2a81ad4aa492d92ba76cbefb47.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/33517818643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4363/5879/files/zogizozuxedujudufele.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9768/5157/files/dewalt_circular_saw_guide_rail.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/d43733_6fccfc1a400046d98b1f8c869cb09b78.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/185c00_c7a5b390a23349ef8bf0a6f3c76a3f99.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_8d014fd798c8423b829ce8d80b9d38f3.pdfIn PDF document text
    • https://static.usrfiles.com/ugd/b8c837_41c7eab4ce414a78804d6f99c1bdfc73.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001018e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1018E 5336 bytes
SHA-256: 691605c87359b0cf0150ce855898f44b58a9a21dfef9214ad9c2886025b759af
font_01_sfnt_off00011381.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11381 2764 bytes
SHA-256: 5254355459bc4e74a465b4fb88f50841f4db3daef55e2fe653cf7dff57631f80
font_02_sfnt_off00011f18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F18 11748 bytes
SHA-256: d81c012521b22eaf5fa995d3cc3ea0a6cea793d2e3a4a4c111b9cd2e7d56b69d

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