Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1336b5c93abf01b…

MALICIOUS

PDF

36.0 KB Created: 2020-07-29 01:07:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e0383094eb47c2e3350f8f4c4ae13bee SHA-1: 9e844c5d43aa7d86b02ace33a43e5a9c361380ac SHA-256: d1336b5c93abf01bc8eccff428b0a77cee9c21671e5f4e1e437ce848b520b1e5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to ttraff.ru. Additionally, it exhibits a PDF link farm heuristic, with numerous links hosted on cdn.shopify.com, suggesting an attempt to distribute malicious content or engage in SEO abuse. The ML classifier strongly flagged this PDF as malicious. No scripts were extracted, but the presence of multiple embedded URLs and the link farm indicate a redirection-based attack.

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=bhojpuri+chhath+puja+song+video In PDF document text
    • http://files.smearlychildhood.org/uploads/1/3/1/3/131398059/6843767.pdfIn PDF document text
    • http://files.ggdot.org/uploads/1/3/0/7/130739146/9009638.pdfIn PDF document text
    • http://files.clovercreekaerodrome.net/uploads/1/3/0/8/130813643/495d99ee6.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/1/0429/0209/3987/files/zigatekijapikonuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/3215656586.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64830269039.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/13121593915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21244882445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7608/4117/files/6665831544.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6025/7177/files/76147938644.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/fezibuwatipukisaganoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5529/0270/files/31490591604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4122/5880/files/sebakoluxumuwoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/62597517939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8362/files/dapejewebit.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005247.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5247 5368 bytes
SHA-256: d82ebd5881013f1cd8edbd502c4a8b90a7e7dc6f05a717622d5668d2fce5cc94
font_01_sfnt_off0000648a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648A 8912 bytes
SHA-256: 6b9349cbbd96f0964442f8ddb5bedd33a711a0b5076aae5d42ced000355c051a

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