Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdbaad069bef4c6b…

MALICIOUS

PDF

45.6 KB Created: 2020-08-24 17:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a08e6682aa3e5927cccf1dd89af93c18 SHA-1: 3fd42bafc17da6b5a1c9f463aa3c13216db1d8f3 SHA-256: fdbaad069bef4c6bd27bc76955cd37b857f19b8b6d1a7f94b1326d88ae62930a
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'. This URL is presented within the document body, disguised as a 'Dungeon defenders farming guide'. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious URL is the redirector, which likely leads to a further stage of infection.

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=dungeon+defenders+farming+guide In PDF document text
    • http://files.indusvastra.com/uploads/1/3/2/7/132740285/8482791.pdfIn PDF document text
    • http://files.cuastt.com/uploads/1/3/1/3/131398591/9247193.pdfIn PDF document text
    • http://files.agcvfra.net/uploads/1/3/1/1/131164387/penav-gagino-gixojarag-banurofiv.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/1/0432/3731/0626/files/xuwoxomizafeje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0379/7913/files/kilapo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/2621/3032/files/chemistry_notes_form_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/xupumojokepejiliviruxufit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/caller_id_block_calls_texts_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2768/5798/files/3194778907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6515/5489/files/dolurifakekiforapotamux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8879/6065/files/83647764548.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5689/0013/files/nemasiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/tuberculous_pleural_effusion.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
🗂 Part of campaign: cuastt.com 3 samples

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_off00007547.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7547 5192 bytes
SHA-256: efe8f9d2eea4b195361c4eda1124e5cdd874e79d1cda3790f5cef7a0ac59c7fb
font_01_sfnt_off000086e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86E1 10192 bytes
SHA-256: 9322257c6b85a9b976513368fd0ed47e827427ff291ce341111fe62ee2c970dc

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