Malicious PDF — malware analysis report

Static analysis result for SHA-256 e26b12fdde2fc236…

MALICIOUS

PDF

36.8 KB Created: 2020-08-15 22:04:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e80959970ac7081e0e0b204db1f9e911 SHA-1: 3b96846039ef6022f6ce66f3121c84b8193fbfe7 SHA-256: e26b12fdde2fc236654880569634007937918323d8fb406f799d7c9c04a800ac
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains the same URL and text suggesting a lure for an 'eml file to pdf converter online free'. This indicates a phishing attempt to redirect users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious.

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/wb?keyword=eml%20file%20to%20pdf%20converter%20online%20free In PDF document text
    • http://files.endodiabetes.com/uploads/1/3/0/9/130969740/85e44a343c069a.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/1/0430/5931/4841/files/48595561052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dewefezagabujam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3009/1688/files/tetagusunuviwip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5704/4890/files/dogosidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3831/9527/files/fixofisabilafijetitobixiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/0311/2616/files/calories_in_pakistani_food.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/wituvopagig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1059/5748/files/21951782170.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9714/2936/files/maxobunatupekalew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3461/5708/files/60721317195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5865/8456/files/jebaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/3781872065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3427/2159/files/joxamadinosaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9754/7157/files/98541027754.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 1

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_off000053b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53B0 4932 bytes
SHA-256: 48d2633357bb3563eb6504883f0f8a058e4c95ae9b9997a1960a032240a1ee19
font_01_sfnt_off0000646c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646C 9988 bytes
SHA-256: 4ed6293a597ba7af842f9e3f43930211830e4bb8b29b28810ca54b87c81a87c8

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