Malicious PDF — malware analysis report

Static analysis result for SHA-256 5caab7db945eeea9…

MALICIOUS

PDF

73.2 KB Created: 2020-11-13 05:19:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 7f42e625266f0194828c55bfa2e5eb3b SHA-1: d827f4c9254fe27e79a6f11ec49efc7671d80fef SHA-256: 5caab7db945eeea9365f924539df3c81d669642f0bce3614b6d8821d79137717
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://traffine.ru/aws?utm_term=android+alarmmanager+oreo'. This indicates the document is designed to lure users to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious, supporting the conclusion that it is part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://traffine.ru/aws?utm_term=android+alarmmanager+oreo In PDF document text
    • https://cdn-cms.f-static.net/uploads/4382613/normal_5f961b687fe09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389792/normal_5f9c60724d416.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f87d013e0056.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/pozokimepe/wavecrest_management_team.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3d4e124-e715-48f7-ae8a-b551feca97e0/pokemon_x_reader_lemon_deviantart.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7f938a6-0c93-45cf-a199-e5ba24b7eefd/harvard_national_model_united_nations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f65d9db3-d930-4e9f-bd8d-468760c6112f/44468840931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f536054c-2ef9-4c93-bc5b-369218f691d7/40330519019.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/adobe_acrobat_reader_dc_pro_crack_download.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/62425814568.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/439cc320-ae39-490d-b0e8-8b46d12547c0/fodurugifasunim.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/bosevexifafediwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a6c1bec-19c9-4a2b-94c9-cadf6bacfc29/90514489645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae23edda-f9b8-4132-aaaa-155b62fb45c8/tajudujafagezifazutakanex.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_off0000e093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE093 4956 bytes
SHA-256: 360331fcdd9fb949d53f76b65a56c380b6bdbf173afd430d52f03f2fb0e1ee1d
font_01_sfnt_off0000f157.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF157 12032 bytes
SHA-256: 5286fab83bb3687991f2fe0206cfc418d45ea9f7a1bf96dcda2235ef1cabdef7

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