Malicious PDF — malware analysis report

Static analysis result for SHA-256 aef8d95b72dffa0d…

MALICIOUS

PDF

41.7 KB Created: 2020-08-12 07:17:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 493adbddbdfa025470104a3bbec3fafc SHA-1: dc466df648ba56fc8d069b1d515da8ed4b5f6abe SHA-256: aef8d95b72dffa0dc4d6b4996b8b1db1ebbcdffff3b4523f044d7aa21e6fec4f
194 Risk Score

Malware Insights

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

The PDF contains numerous links, with a critical heuristic firing indicating a link to a known malicious redirector at 'https://ttraff.ru/wb?keyword=cabin%20crew%20interview%20pdf'. Another critical heuristic identified a large number of embedded PDF links, suggesting a link farm. The document body, though heavily obfuscated, contains the same URL and a benign Shopify URL, reinforcing the lure. The primary attack pattern involves redirecting the user to malicious infrastructure.

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/wb?keyword=cabin%20crew%20interview%20pdf In PDF document text
    • http://fadafi.anatomy-demystified.com/uploads/1/3/1/4/131406436/114d2a86.pdfIn PDF document text
    • http://files.scaeop.org/uploads/1/3/2/8/132816036/firuw.pdfIn PDF document text
    • http://files.meowlinda.ca/uploads/1/3/0/8/130813643/dorafaz.pdfIn PDF document text
    • http://files.craigleacapetown.com/uploads/1/3/1/3/131383823/4715212.pdfIn PDF document text
    • http://files.authormariantee.com/uploads/1/3/0/8/130874162/bolil-nubavise.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/1/0433/8063/7861/files/5187689539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4146/3189/files/73241237001.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2205/6600/files/nigonedugixuzukifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7677/2250/files/mogokusase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45035229099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/61586948068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6128/7839/files/12552279540.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4575/4792/files/principles_of_behavior_modification.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4077/6093/files/pulofiveruzurupogariwunid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5483/3564/files/nuzewefeviditodesikaw.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 8

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_off000067c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67C1 5136 bytes
SHA-256: e3d4a7a80ff75d99504713edf75f0306f87c105da5d74ff3010a6afef2f41a7a
font_01_sfnt_off0000795a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x795A 9632 bytes
SHA-256: 0a323b86c5201335f1cdb2ea70a3ae3468e2b6de04b9a8a729ec23077d6b39fc

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