Malicious PDF — malware analysis report

Static analysis result for SHA-256 109361555b02359e…

MALICIOUS

PDF

33.1 KB Created: 2020-08-25 14:11:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8b7be29071a5740942e2fc80a49f620 SHA-1: 15400a16197fe6ef0e1146562c0e552d35c330a0 SHA-256: 109361555b02359e58a409732e403e88a71cac2ff119e072043a01e0b3a1f6ef
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) that is flagged as malicious. This suggests the document is designed to lure users to malicious websites, likely for phishing or to download further malware. The ML classifier also strongly indicated maliciousness.

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.ru/pify?keyword=afnor+catalogue+formation+2018 In PDF document text
    • http://files.johnbunyanbaptist.org/uploads/1/3/1/1/131163512/c1761954f49.pdfIn PDF document text
    • http://files.diamondavestudios.com/uploads/1/3/1/8/131856380/2039366.pdfIn PDF document text
    • http://files.friendsroyalmarsdenchelsea.uk/uploads/1/3/0/9/130969960/1282665.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/1/0441/3430/1848/files/envision_math_workbook_grade_5_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/vanudenasifujikenutelexen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1868/1496/files/2019_bollywood_movies_free_hd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9744/6816/files/nusovesuverafasoroj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4959/9644/files/printable_blank_monthly_calendar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3714/7811/files/vujonemogir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9565/4554/files/85275887230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9114/9471/files/82441201359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/83327874534.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7247/0686/files/67616914367.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 5

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_off00004474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4474 5532 bytes
SHA-256: 9b3a49fd746ac3521d591182996bf83b5e2014cd50e2bd5bbeaaacea3cf79abc
font_01_sfnt_off0000572a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x572A 9544 bytes
SHA-256: ec67b36a7ddae746f16d8ea9cafdf9b79e213f5be8183b599dabf4347b71ee92

Open this report in the interactive analyzer, or submit your own file for analysis.