Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0dd2dc05f9b8aba…

MALICIOUS

PDF

71.2 KB Created: 2020-12-23 09:59:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 2f6157ccd8f26cd1b07dd7160a1a2660 SHA-1: f0edd1e55ad4a5416167921cd23bc6bfae33b5a7 SHA-256: e0dd2dc05f9b8aba1d85f3b40c969cfc995bf4c6ab88416a13d88ee8a61fc1da
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a large number of external links, with one pointing to a suspicious URL that appears to be part of an SEO link farm designed to distribute malware. While no scripts were directly extracted, the PDF structure and the presence of numerous external links suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://trafficel.ru/strik?utm_term=nail+biting+polish+for+toddlers+boots PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4473622/normal_5fae50ebc7ca7.pdfIn PDF document text
    • https://fagozeku.weebly.com/uploads/1/3/4/5/134506452/denajexugal_zufenukiza_miwolesi_wimomuvinuv.pdfIn PDF document text
    • https://vozunekoba.weebly.com/uploads/1/3/4/9/134902797/6359321.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378607/normal_5f90f0dd3b9ae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/zabetorelobatus.pdfIn PDF document text
    • https://s3.amazonaws.com/medetopuwofetut/71156562809.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/4025871995.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/60104080056.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/mathematics_activities_for_elementary_school_teachers_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/86920518435.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5196816f6d44b07d9ab25/t/5fcbf5722fa8bc6bcdd29295/1607202163855/english_stories_offline_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc7ef837-ba69-43b7-8ca9-0ee08679fa24/xumajinosuwezu.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/dance_basanti_mp4_song_pagalworld.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fe13a16c0a0fa116c3c3573/t/5fe1bba170f55f6f05f3a325/1608629154168/1743178932.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_off0000d7bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BC 5412 bytes
SHA-256: 1784a76f34e1f4cb6c258bffbeacfb29b40823d530c774fbb7de4f3afa22b768
font_01_sfnt_off0000ea1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1C 11260 bytes
SHA-256: da6cbdab74e19dd9fa2cd0cad41d30675556e5b0bfe587c714108d5ae346fb36

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