Malicious PDF — malware analysis report

Static analysis result for SHA-256 59480bfff1cabb47…

MALICIOUS

PDF

72.3 KB Created: 2020-11-25 20:53:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 51ed9343fea6db3b4f30bdb1d86fbc98 SHA-1: 7faf8d224ce1a498965dfaf9b0fe3eafc037e36c SHA-256: 59480bfff1cabb47176b25e759b90d813df5f6c89f8fa386743c0479c79ac689
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URL that directs users to a suspicious domain, likely as part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be a lure related to 'Gentilicio de espa a en ingles'. No scripts were extracted, but the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

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
  • 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=gentilicio+de+espa%25C3%25B1a+en+ingles PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459170/normal_5fa7c9d5888cf.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/8207f87f-9a98-4f37-a3db-1374ee4cde22/my_hero_academia_episode_14_english_dub_funimation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac377dac-dbb6-4558-bb2a-387c34ccab76/dd_form_2977_sep_2014.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0388281-25da-4e39-8232-c67d04fb3a53/sefuvonetubuteralozu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9dc19275-3e31-4070-8008-9b3695de49fe/94886871449.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36806d70-4f60-491d-bf80-29ba0b17b4df/52951546608.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/822f9555-80d0-4af7-947e-d450dce5e27b/rirob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d0712be-b2f8-48a4-91ad-63f69f428d9f/41212062392.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b1d3bb9-4cc4-4e21-bbce-3e9744d1bd37/th10_war_base_2017.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34cd4fb7-44ff-4c6d-8bf5-c879f808606a/wiki_surviving_mars.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93654af2-b77c-4756-a63d-588d68673d27/refuse_to_choose.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75c8508-94de-4ec3-bc57-c142abcf3137/domobidarademi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff1245e2-6acc-4982-a938-4390dec8216a/2020_estimated_tax_penalty_calculation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fc8a32b-bc3d-4311-aa57-6d07874775a0/38387879504.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_off0000d8d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D7 5388 bytes
SHA-256: a8d3eec16029aebaab125f1fffe5d50fb3be51a41d4317fef8720f8a9de6eee4
font_01_sfnt_off0000eb06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB06 13004 bytes
SHA-256: 1fafad867a722d6829bd26340c6a720326b3bb9a64535e12cb8c0fbc4e50ca95

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