Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8b4bb2038c7e2b6…

MALICIOUS

PDF

124.9 KB Created: 2020-08-07 15:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fec0cfdf6fb34e8cfe1a09938bdf559d SHA-1: e53ac196cce94fbb7db5c9b7e6779ab6235aea83 SHA-256: e8b4bb2038c7e2b69a86ebddefeeb2cf3e0b8dad5337fbdcc687f8fb20d4de39
234 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1059.003 Windows Command Shell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits a 'Clipboard command execution lure', instructing the user to copy and paste content into a shell. This suggests an attempt to trick the user into executing arbitrary commands. The document body, though heavily obfuscated, contains the malicious URL and references 'wkhtmltopdf', indicating it was likely generated programmatically.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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=batch+file+commands+windows+10+pdf In PDF document text
    • http://files.lavishvas.com/uploads/1/3/1/4/131408572/panowepegirasu_guzidasep.pdfIn PDF document text
    • http://files.karinfrye.com/uploads/1/3/0/7/130739027/8432090.pdfIn PDF document text
    • http://girogotag.filmtofield.com/uploads/1/3/0/8/130874493/708216.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/1/0433/9197/5580/files/44160492576.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9373/7118/files/8ch._net_zoo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2305/6545/files/76185852444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3926/8769/files/zumepamirelusamifamokid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3731/0632/files/java_beginners_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4173/3273/files/70326910263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7962/2040/files/76905619550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84005007378.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2629/2629/files/california_life_science_7th_grade_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/39537863071.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3041/2453/files/79958541560.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_off0001a32b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A32B 5636 bytes
SHA-256: 6b203645bc5a5442ccf3433a498dc286f4572600c17213c864518723ad9c4650
font_01_sfnt_off0001b651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B651 15048 bytes
SHA-256: 5eb04d9d2f786cc7da6ff28e6e6645c633fa207a7f148e6868e8a4289e12525b

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