Malicious PDF — malware analysis report

Static analysis result for SHA-256 a862a10861e6066b…

MALICIOUS

PDF

79.6 KB Created: 2021-03-11 10:47:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80cb10fa12dbf23a803c895c53eb6cc3 SHA-1: 77b82a771f0189c1f74e85f44419637eb28d120d SHA-256: a862a10861e6066b7189af5312f037355c8792d6ff13fb56f0bb4106b7c8148a
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 URI pointing to a suspicious domain, `https://lozipotod.ru/123?utm_term=akh+lad+jave+dj+video`, which is likely used to host malicious content or redirect the user to a phishing site. The document body is heavily obfuscated, but the presence of the malicious URI and the detection signatures strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/123?utm_term=akh+lad+jave+dj+video
    • https://cdn.sqhk.co/jitolado/hd9idhe/blue_bloods_cast_2020.pdf
    • http://meinekarten.best/xekonamrwi.pdf
    • http://tobufasir.iblogger.org/android_software_update_for_note_8.pdf
    • http://lnstagramverifiedbadgeservice.com/3903107744pwihm.pdf
    • https://cdn.sqhk.co/gixeruxa/idthfcz/castle_clash_mod_apk_2019.pdf
    • https://cdn.sqhk.co/pegatorapo/rDjagd4/mizamoxesodasetokineza.pdf
    • http://jigitozunawada.66ghz.com/how_to_replace_an_armitron_watch_band.pdf
    • http://tradebot.space/36104453027vno7i.pdf
    • https://cdn.sqhk.co/kufomopinu/hbijVgi/gagefiniwigorireseki.pdf
    • http://natbeach.space/28489156840ybsu8.pdf
    • http://varnisvakq.ru/11437177053369hv.pdf
    • https://cdn.sqhk.co/temirikuji/hfyxFLH/80092314173.pdf
    • http://goodsfor.life/baserirefopiplw1ex.pdf
    • http://ruvaruvifovuk.iblogger.org/pubapopedub.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tizidirek.rf.gd/properties_of_exponents_review_worksheet_answer_key.pdf
    • https://s3.amazonaws.com/gezetega/38775508747.pdf
    • https://e301b21f-f707-426c-a094-6199d4b1a2d6.filesusr.com/ugd/f65518_f9a7b29b3ba8406c9f3ff80dbc00088f.pdf?index=true
    • https://s3.amazonaws.com/saziwijaxodav/86946616770.pdf
    • https://fd7a53fe-11c1-4e60-83ad-ac1bb997268f.filesusr.com/ugd/5cf23b_3b127f4bbf6a494ba92bbe5d310d4833.pdf?index=true
    • https://081e7fb2-604d-424b-9b75-a58d54a71a44.filesusr.com/ugd/abd6ea_b8a9a5f26f9449f5893443a6a8197ee7.pdf?index=true
    • https://s3.amazonaws.com/medaliwifufugel/dafufu.pdf
    • http://dogamesesokuj.rf.gd/sitowuve.pdf
    • https://s3.amazonaws.com/dowesitobuga/nezopelugetifekamun.pdf
    • https://6c036dbd-b327-4678-b778-de8a2ee7bb50.filesusr.com/ugd/ed64d2_ae29f82bb813429186b5c47452ead81a.pdf?index=true
    • https://fdb0147f-387d-4908-9c93-1ccdb5bf775f.filesusr.com/ugd/aea2e0_1896941e673c47cf9fb61b7142e1a31a.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fcd6.bin
bf3c7ca144662b90749e9c92dfd5426d0dc0cae8efebd29c822727433a5d99c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD6 4828 bytes
font_01_sfnt_off00010d4a.bin
0cf330d62d97318c0e5df64fbf1414ad968cb394dccafb80506046e46b127af4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D4A 10544 bytes

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