Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e81d8e6ef6d4e17…

MALICIOUS

PDF

73.4 KB Created: 2020-12-28 00:50:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 67ab5b33cbe6e95a905a308c5b642e73 SHA-1: 9d5cd7f796efff5a6d4e748f5d9c070ede98271f SHA-256: 6e81d8e6ef6d4e1731c8444b66d864c288465837c80a1313fcc972063b935c63
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.007 JavaScript

The PDF file contains multiple heuristics indicating it is a credential phishing lure, specifically impersonating Apple. It embeds links to redirectors and external PDFs, with the primary goal of leading the user to a phishing page. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://likerediweraj.weebly.com/uploads/1/3/4/6/134691167/midifek.pdf.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffe.ru/strik?utm_term=akinator+app+safe PDF link annotation
    • https://likerediweraj.weebly.com/uploads/1/3/4/6/134691167/midifek.pdfIn PDF document text
    • https://xexijezukivox.weebly.com/uploads/1/3/0/8/130874296/gotipizalakezitipe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386842/normal_5f8f8d582396a.pdfIn PDF document text
    • https://gejizataki.weebly.com/uploads/1/3/3/9/133997606/4660901.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372987/normal_5f9a577d88974.pdfIn PDF document text
    • https://kedasawavofari.weebly.com/uploads/1/3/4/5/134589708/b1ecb8f5da00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406456/normal_5f9ed429b5295.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fcd3b17-4d3e-493f-983e-4287533a0008/xjz_survey_remover_chrome_extension.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c03e377-3bed-4426-87fb-83ca9e048dd3/744_credit_score_means_what.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47319c69-580c-470b-8929-c743fd91ad81/soweminafexaxera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb36afc0-49a0-49fc-ac70-02625d6a7373/fremont_contract_carriers_terminals.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02bc4c1e-bdbe-48ed-85e8-e24b807aa463/50189389808.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e3c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C9 4916 bytes
SHA-256: c782822c48ec65097e526610b05a1286830a23e90cfc827b80dc3f85b79f3936
font_01_sfnt_off0000f497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF497 10712 bytes
SHA-256: 9f44b56e86718c73bdab03b1feaacac73b946a6bb692cb62db062edbd5cfcf34

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