Malicious PDF — malware analysis report

Static analysis result for SHA-256 c61bf38cad0904e1…

MALICIOUS

PDF

49.9 KB Created: 2020-08-14 05:41:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b693355a0a89c916df6619b3cb23b5ab SHA-1: 309e3a79743bd072d834487266599727bdadc038 SHA-256: c61bf38cad0904e1f5ae120ce01071b06bdfaec83c38409ca78b75243e960b6b
234 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1059 Command and Scripting Interpreter

The PDF contains a large number of embedded links, many of which point to a redirector service. The document body also explicitly instructs the user to copy and paste content into a shell, which, combined with the malicious redirector, strongly suggests an attempt to trick the user into downloading and executing a second-stage payload. The primary malicious URL identified is https://ttraff.cc/pify?keyword=windows+10+enterprise+bootable+usb.

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.cc/pify?keyword=windows+10+enterprise+bootable+usb In PDF document text
    • http://files.glammoms.us/uploads/1/3/1/4/131438741/devuku.pdfIn PDF document text
    • http://files.proridersaddlesllc.com/uploads/1/3/1/8/131856904/zasufefutilokabu.pdfIn PDF document text
    • http://files.nathanielpicardbusky.com/uploads/1/3/1/3/131379099/3377395.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/1/0431/3907/2161/files/64705905152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9007/6057/files/robert_tisserand_essential_oil_safety.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0822/7490/files/merotapodidogiburo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2059/7922/files/jedegefaroxafulogutut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7090/6780/files/nemamulede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/fobuzulakovimatixa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/dmv_florida_test_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3174/9031/files/17544880151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinubigelezegir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7230/7875/files/28446507591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6612/1623/files/11077229847.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0834/9592/files/33208833131.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4C 5392 bytes
SHA-256: e5ec7e1e9925c1cf44bc5b9bf7e39928a43f31e924f283da7dc375339877a6ba
font_01_sfnt_off000081be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BE 10144 bytes
SHA-256: a5f780847e273c417e4e8a18ed4b9d4daa2439ad0cf631d3b66b0d82e3021cd4
font_02_sfnt_off0000a4a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4A6 16248 bytes
SHA-256: fbeccb1482ee56052ed809ec6cb7dfbc577d51b9212e43fffabc93e29761b6bf