Malicious PDF — malware analysis report

Static analysis result for SHA-256 68fa70475ad70e89…

MALICIOUS

PDF

64.5 KB Created: 2021-01-31 05:58:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 4e711ce97da867bfcabaf241a499f172 SHA-1: 7803daf00e3456966cab6b2f2d80e2b6c40ad66d SHA-256: 68fa70475ad70e892dabb8e8c395ecf8210f71f79c767d94365e167a1fd08b45
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URL pointing to a suspicious domain, which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, appears to reference generator specifications, suggesting a lure to entice users to click the malicious link.

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://jottigo.ru/123?utm_term=gentron+10000+watt+generator+specs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453098/normal_5fe868e158519.pdfIn PDF document text
    • https://cdn.sqhk.co/tezesafura/eAgiicv/growth_strategy_meaning_in_urdu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373788/normal_5fe57ded7ad83.pdfIn PDF document text
    • https://cdn.sqhk.co/wowobavukelo/cjaQiXL/big_helmet_heroes_ios.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/eiaKj5u/vumidasubebunuduxalubik.pdfIn PDF document text
    • https://cdn.sqhk.co/fosojatesog/zSifhju/warship_battle_3d_world_war_ii_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/7ijAKhd/93471111039.pdfIn PDF document text
    • http://vezapom.iblogger.org/20554629612.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/safenalavojuwu/mcgraw_hill_education_physics_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/wovodolok.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/aviation_meteorology.pdfIn PDF document text
    • https://s3.amazonaws.com/tomaxade/80522372535.pdfIn PDF document text
    • http://mowesedapi.epizy.com/transform_from_cartesian_to_spherical_polar_coordinates.pdfIn PDF document text
    • http://rutuvofogiseba.epizy.com/44990938084.pdfIn PDF document text
    • https://s3.amazonaws.com/moduluzuxikari/95317433259.pdfIn PDF document text
    • http://palakojum.rf.gd/piwadobilevijalufum.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/sample_cover_letter_for_teaching_job.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/88521113266.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_off0000bd30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD30 5384 bytes
SHA-256: a5ad06fb6534269271dd823c66ad3ffa976a83d6444c175d951efdb2149dd5f6
font_01_sfnt_off0000cfb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB1 10948 bytes
SHA-256: 192f69be408540907feb0cb54536fe13e64c265246ec3e257988a6b95938482c

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