Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fdb6fa2002dce98…

MALICIOUS

PDF

47.5 KB Created: 2020-08-22 00:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc235b494fc7040245c1275c7d074fe8 SHA-1: c040c21d73256ad078fdb2bcc0ed8b854aee8177 SHA-256: 1fdb6fa2002dce98775fec7d89d5d1afcd47c0cd7d09936b06d4d4f7f27ceab9
234 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 Malicious Link T1204.002 User Execution: Malicious File

The PDF document contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body, though partially corrupted, contains text suggesting it is a 'Linux command line cheat sheet pdf', which serves as a lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing attempts.

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=linux+command+line+cheat+sheet+pdf In PDF document text
    • http://files.shoptwoowls.com/uploads/1/3/0/8/130874220/gabarezi-kujopi.pdfIn PDF document text
    • http://files.nationalstocktradingacademy.com/uploads/1/3/1/3/131383255/6054571.pdfIn PDF document text
    • http://files.signcraftpdx.com/uploads/1/3/2/6/132696285/zujoxi.pdfIn PDF document text
    • https://cheatography.comIn 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/1/0435/6128/7839/files/exercice_pour_apprendre_a_lire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0845/7885/files/cotton_sheet_sets_at_walmart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1683/0632/files/chemistry_of_polycyclic_aromatic_hydrocarbons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4285/6344/files/72008738633.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/85761180089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3794/9090/files/72820252541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6832/4005/files/wusuri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5452/1758/files/constrictive_pericarditis_guidelines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/12910289150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9512/1319/files/29992658563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8162/1919/files/42813430603.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 8

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_off00006c30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C30 5308 bytes
SHA-256: 23f5e75009463594308dffd9cc331bd399f5cad64ca4733b2dff5e0a14f93ea6
font_01_sfnt_off00007e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1D 16320 bytes
SHA-256: f0c376766b6830d2142ed9dfa00aba1723ddc368c64ca29fe4ceeec3c591c5cc

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