Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba62faab6db05b94…

MALICIOUS

PDF

77.4 KB Created: 2021-03-17 11:42:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ecbd32208ccc58bbd23cce67f16ce08a SHA-1: 2189e9de0260c8b0b4ff0c90217f95435248092f SHA-256: ba62faab6db05b9456ccca94c689402f2ffe9d78f3a390f0d17f014beb245710
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for an external URI, pointing to a suspicious URL that is likely part of a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/strik?utm_term=first+alert+brk+7010b+hardwired+smoke+detector PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4449996/normal_60096ebe75b23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392660/normal_602d6d77733e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421944/normal_5fec48b26eb62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391925/normal_60482b57bab32.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/viregujipowuru/back_exercises_kaiser.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/77246079410.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90c325d2-388a-4388-89dc-2eede9a94170/how_old_is_zens_brother_from_snow_white_with_the_red_hair.pdfIn PDF document text
    • https://893c8be9-d140-4a04-8a3e-66bd54b472cd.filesusr.com/ugd/efd7ea_d91713ca0e5e433289acb5cc5f44ba08.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6fc712a-942e-4776-bdc0-43f12d4c0d49/64081049163.pdfIn PDF document text
    • https://0503187d-52cd-4237-9521-a3cb9bf551ae.filesusr.com/ugd/5bb01c_9bce0fbe64e84828b50918813fae6305.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/033da0c3-d104-4626-959f-a7b66a08eaf8/66473244212.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/74743228375.pdfIn PDF document text
    • http://bibibojusajol.rf.gd/kuxezipebif.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/wwe_205_live_results_bleacher_report_grades.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/will_5th_wave_have_a_sequel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4ea1c81-3244-4aae-b7b7-2498644646f0/play_script_format_ks2.pdfIn PDF document text
    • http://nimobavaze.epizy.com/dawufakerofopizife.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/milady_chapter_20_review_answers.pdfIn PDF document text
    • http://kijemuf.epizy.com/fortnite_challenges_cheat_sheet_season_7.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/musician_biography_template.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_off0000ede7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE7 5704 bytes
SHA-256: dd2819ac965ca675e50e476558063621e428e44253f970d32f127e3d8b2eb3de
font_01_sfnt_off00010145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10145 10916 bytes
SHA-256: a619e0f4896bf8f0050b8697a4cc71131f78c4c8ae35adf40603f6e81adcc9bd

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