Malicious PDF — malware analysis report

Static analysis result for SHA-256 17de669ca626eba2…

MALICIOUS

PDF

63.7 KB Created: 2020-08-25 04:07:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d9c6fd1cd5f2380f01ddfc3c9256e2bf SHA-1: 5dd9d4f25f60ba53ba195036ff965dac2f4a4b54 SHA-256: 17de669ca626eba252613bb2795c2c2b46f47147e8c8efae21e51de3b88b8a2d
234 Risk Score

Malware Insights

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

The PDF contains numerous links to redirector infrastructure, specifically pointing to 'ttraff.cc', which is flagged as malicious. The document also employs a social engineering lure, instructing the user to install a browser extension or update to view content. This suggests an attempt to trick users into visiting malicious sites or installing further malware. The ML classifier strongly supports the malicious nature of this PDF.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=yandex+music+fisher+android In PDF document text
    • http://files.mixartists.org/uploads/1/3/0/7/130739112/8742614.pdfIn PDF document text
    • http://files.sjhsasb.com/uploads/1/3/1/3/131379439/cd87a7eade.pdfIn PDF document text
    • http://files.mx.reinventing-reality.com/uploads/1/3/1/8/131871816/62ede0c1.pdfIn PDF document text
    • http://files.yucatancustomfurniture.com/uploads/1/3/0/9/130969548/zagivebiwaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/68923979955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4958/1724/files/xodijazo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4665/8463/files/introduction_to_computational_mathematics_xin_she_yang.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6717/1223/files/90162233271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61047377128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/likokulifolimurozokubiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/new_sepsis_guidelines_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/2536/6945/files/undertale_asgore_fight.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jidaxuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6049/4490/files/68683052779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/android_apps_not_installed_after_reboot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1270/1860/files/49391207404.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a6a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6A2 5060 bytes
SHA-256: 33b005874f8a25c188caffefd607527324d6f02c2dd66f99e4dbd5650abc2c0c
font_01_sfnt_off0000b78c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB78C 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_02_sfnt_off0000c01a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC01A 10164 bytes
SHA-256: e2f092687be4c383556f2107c3b69df2aa10355948854e82bb3e9569f28d233a
font_03_sfnt_off0000e2ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EF 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34