Malicious PDF — malware analysis report

Static analysis result for SHA-256 129a319761a2fdab…

MALICIOUS

PDF

53.9 KB Created: 2020-08-03 07:25:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8299d00b05272cb82e80ed732a811bfd SHA-1: f2b494912aaef90946c6c00618f77d164fdad122 SHA-256: 129a319761a2fdab21679d20a9e3a2f7213922af0c3c9dbeee99655511f7f73b
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded URLs, with a critical heuristic identifying a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=proakis+digital+communications+5th+edition+pdf'. This, along with the PDF_SEO_LINK_FARM heuristic indicating a mass external PDF link farm, strongly suggests a phishing or malware distribution attempt. The ML classifier also flagged this PDF with high confidence.

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.com/pify?keyword=proakis+digital+communications+5th+edition+pdf In PDF document text
    • http://files.knikoletaylor.com/uploads/1/3/1/1/131163667/jajunizetupine.pdfIn PDF document text
    • http://files.wholesaleabundancesoaps.com/uploads/1/3/1/8/131856205/7563649.pdfIn PDF document text
    • http://files.alphaphiomega-betatheta.com/uploads/1/3/1/3/131398010/5311409.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/1/0431/5090/1402/files/33985846757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4883/6004/files/kigagede.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3683/4968/files/momunemojinixesigir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7664/0156/files/20164406144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/remote_desktop_port_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/pifaraz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4368/4503/files/zobawuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/mobejawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4639/6326/files/78805733238.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 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A72 7460 bytes
SHA-256: 6213824b4f18b1bf0d881c63cc76d2e14f8b977ae91f9e35d31b334761a8f6d7
font_01_sfnt_off000083b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B5 5640 bytes
SHA-256: c96dc9db6646ec6be20b07d02141bb10df00443621e0dea8fe61a49fd1a19b33
font_02_sfnt_off000096ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96AB 10840 bytes
SHA-256: fdd62a568b8ef6f4d96f58bfc801c3b0393508a166184c489f7ae0addce33a02
font_03_sfnt_off0000bb83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB83 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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