Malicious PDF — malware analysis report

Static analysis result for SHA-256 feacba37ce751018…

MALICIOUS

PDF

79.2 KB Created: 2021-03-20 02:14:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 89cfed782750d939f7223865770be2ba SHA-1: 5992c0a46d52ffbb88447b839115b776a91f2fe6 SHA-256: feacba37ce7510189f196d7a645b28cce3f2f66fe28b9a80a49a369348682549
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/strik?utm_term=asu+mapp+software+engineering PDF link annotation
    • https://cdn.sqhk.co/totarujined/SSfIijs/38445535962.pdfIn PDF document text
    • https://cdn.sqhk.co/gufojakig/j4jhajf/diy_mask_with_filter_pocket_and_nose.pdfIn PDF document text
    • http://zodoworusa.22web.org/black_and_decker_grass_hog_gh1000_replacement_spool.pdfIn PDF document text
    • https://cdn.sqhk.co/sexuzoropa/3heMolc/download_monkey_island_ita_scummvm.pdfIn PDF document text
    • http://tulimosigen.22web.org/33179660765.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/GIhjjbz/91676757946.pdfIn PDF document text
    • https://cdn.sqhk.co/fafovewidom/hS0yIhc/samsung_secure_folder_app_permissions_enforced_by_policy.pdfIn PDF document text
    • http://mixadutibunuzu.22web.org/95139604975.pdfIn PDF document text
    • http://jixapijojuxev.iblogger.org/pigedivekiwisisapemokew.pdfIn PDF document text
    • https://cdn.sqhk.co/digatamale/jiiWjg2/international_calls_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/jiJgdid/armello_dragon_clan_rings.pdfIn PDF document text
    • https://cdn.sqhk.co/zejegure/SRtHHii/laboratory_4_uniformly_accelerated_motion.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/mejifavo/20642359716.pdfIn PDF document text
    • https://s3.amazonaws.com/geradi/great_crested_newt_mitigation_guidelines_english_nature.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/clauses_of_result_exercises_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jupoti/noun_verb_adjective_adverb_list_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/gigitovemixodowe.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/zosuzefati.pdfIn PDF document text
    • http://vokoribosid.rf.gd/ribabuvugepatawugisivitip.pdfIn PDF document text
    • https://s3.amazonaws.com/gedexim/gastric_intestinal_metaplasia_guidelines_bsg.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/alternative_spellings_for_ai_worksheet.pdfIn PDF document text
    • http://soruseripekibe.rf.gd/singer_futura_ce-100.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_off0000f3c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C8 5272 bytes
SHA-256: f017cf45de686544a196a73fac7b3cc48cf2a82bf6c2ccd6ec7d86bcb42d6e09
font_01_sfnt_off000105b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105B1 11720 bytes
SHA-256: 8b65c9cd6c6a757f9cdc053aeb98794a83c32e3c1d81b3d1c4fce1a110062700

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