Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a30e0e323a9181…

MALICIOUS

PDF

86.1 KB Created: 2020-11-25 18:35:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ac47c28969e11155cd31929a9dcee1b0 SHA-1: 0c3c657d95229bac9d9c0306e7af8c29c856b828 SHA-256: 64a30e0e323a9181930a73081a1f04eba275dab32d472a627bfca651bddd3e1e
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for malicious purposes. The document body, though heavily obfuscated, suggests a lure related to a 'guide'.

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://trafffe.ru/123?utm_term=.hack+gu+monster+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408583/normal_5f9f420ece9b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372737/normal_5fb8e3c115180.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446286/normal_5fba5bf8f06ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369505/normal_5f95c04d38f3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379237/normal_5f91938b8849e.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/b6b59eac-dd2f-4166-bb03-5ecb54af8eef/julolutopujix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6291cff1-fd70-439a-95d8-8f404ef681cf/intentional_interviewing_and_counseling_9th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/mini_water_bottle_label_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/59559586249.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00602103-9a47-4d78-92eb-4125bf03dfa4/lepapoval.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40ab8a82-c074-415c-9c77-0aaefb709cb0/gezupavakokezidurape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/069334b7-5b89-4734-847c-af6a2d166838/35660895384.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/hearthstone_heroic_karazhan_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/xorarekexibezabe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8020bfdf-9ebf-4fdb-b091-3abe5d780d28/89160112573.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_off00011654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11654 5320 bytes
SHA-256: 48555769b0dffbacb2d9c6f634a23a8b1bc31130401d5276df9fc344d56f1486
font_01_sfnt_off00012844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12844 10308 bytes
SHA-256: 99cc83031a7fd6efa8bc44d8f27fca6de62611350ddb7c8e48b1264b2bbf6c7c

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