Malicious PDF — malware analysis report

Static analysis result for SHA-256 58dbf5ca80a5ed66…

MALICIOUS

PDF

73.9 KB Created: 2021-04-07 03:06:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a4e213b925daf25a9fd98c067a9cce6 SHA-1: b29a05530787639221ffcb588dfa9f6e0619f7f4 SHA-256: 58dbf5ca80a5ed6675fed42d99188905de77967df9d47e910da0c89b4f19f952
144 Risk Score

Malware Insights

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

The sample is a PDF document flagged by multiple heuristics as malicious, including a payment redirection lure and ML classification. The embedded URL `https://jottigo.ru/award?keyword=pan+card+correction+form+nsdl+pdf+2020` suggests a phishing attempt related to financial information. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing campaign designed to steal financial details.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/award?keyword=pan+card+correction+form+nsdl+pdf+2020
    • http://salonlabs.xyz/laser_cc308_instrukcja2qi90.pdf
    • http://lotto-investclub.com/nick_super_brawl_4qb9xm.pdf
    • https://cdn.sqhk.co/zowipitilo/ehdidia/wiwalisipuwobawezupu.pdf
    • https://cdn-cms.f-static.net/uploads/4418170/normal_6046beab90a79.pdf
    • https://cdn.sqhk.co/toromerepowa/1jiiCij/neo_geo_pocket_games.pdf
    • https://static.s123-cdn-static.com/uploads/4427273/normal_5fca41013b3a4.pdf
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdf
    • https://cdn.sqhk.co/duxevowoli/gduhaif/appalti_pubblici_atto_notarile_informatico.pdf
    • https://cdn.sqhk.co/feluxolid/hhKibif/sasorakalutuvamukunosake.pdf
    • http://3bki.ru/fitanematunisobp17k6.pdf
    • http://update-win20.online/34157262165z3le8.pdf
    • http://wersita.fun/what_is_asana_in_kundalini_yogaou5uq.pdf
    • https://cdn-cms.f-static.net/uploads/4393041/normal_60450d5e76c74.pdf
    • https://cdn.sqhk.co/daxozazon/5uhiL1V/profilesac_test_answers.pdf
    • http://rixanemusijod.mywebcommunity.org/kewakulotavorepi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7b6ebe5d-89c4-4c5f-bfe4-ae40f7769dc5/fesijawiruvotulozixape.pdf
    • https://uploads.strikinglycdn.com/files/5b284476-47af-42d4-a16e-7e8995b212e7/ethical_problem_solving_model_in_social_work.pdf
    • http://teluroluxeterez.myartsonline.com/entrepreneurship_development_for_bba.pdf
    • 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_off0000e057.bin
b7a1e6c98087171ca396f76a8567b517774d2342c02489b6341c20f9d8b3a692		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE057 5576 bytes
font_01_sfnt_off0000f33b.bin
ad76345ac272097d308ad275fd853478b4ccd3db39a17e42b43d1ca27d678907		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF33B 11004 bytes

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