Malicious PDF — malware analysis report

Static analysis result for SHA-256 54856c2704176abb…

MALICIOUS

PDF

95.9 KB Created: 2021-03-14 15:34:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 21642ec6c9f95f0e348980509f23a22f SHA-1: 6fd51f7d872df9d081ec3e954d1f1d0464b86e02 SHA-256: 54856c2704176abb4ba78c8fb6968cec3407ea055445294647a7997c79de4e84
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The file is a PDF that contains numerous external links, many of which are part of a link farm designed to appear as legitimate documents. The heuristic 'SE_PAYMENT_REDIRECT_LURE' and the presence of a URL related to 'canara bank account statement pdf download' strongly suggest a phishing attempt. The ML classifier and ClamAV detection further support its malicious nature, indicating it likely exploits PDF vulnerabilities to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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
  • 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://pelibifir.ru/award?keyword=canara+bank+account+statement+pdf+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4419423/normal_5fc942bed178f.pdfIn PDF document text
    • http://kefisuful.iblogger.org/can_you_cheat_on_the_dmv_written_test.pdfIn PDF document text
    • http://suzaxikuzexaw.66ghz.com/handling_customer_complaints_a_best_practice_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369496/normal_5fe02afa88cac.pdfIn PDF document text
    • http://veluxanigoga.22web.org/crossfit_training_gear_australia.pdfIn PDF document text
    • http://populiro.iblogger.org/ipad_mini_4_kid_case_with_screen_protector.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528876/normal_6047c616b21e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457561/normal_5ff680398ab7c.pdfIn PDF document text
    • http://xuxuvojetuzutej.iblogger.org/agneepath_poem_whatsapp_status_video.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479454/normal_600f9e0e2ac01.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/megulu/abba_mamma_mia_sheet_music.pdfIn PDF document text
    • https://f33d1b56-f518-462b-b61f-c1b5c1ba661c.filesusr.com/ugd/1c44ce_ed8a6b180c694111a69d8ec2c22a78d8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/tunumogibujala.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/68238363643.pdfIn PDF document text
    • http://zavivemigowoson.epizy.com/aiou_assignment_page.pdfIn PDF document text
    • http://gijuvaginitawaz.epizy.com/bojezagijalamijinuke.pdfIn PDF document text
    • https://s3.amazonaws.com/jaxesabi/zutawejeduxenuguvofav.pdfIn PDF document text
    • http://figapow.epizy.com/babul_pyare_bhojpuri_full_movie.pdfIn PDF document text
    • https://30c0d994-bee2-4d79-bc91-d4aaa7251653.filesusr.com/ugd/0962d9_c515900846904d47b9a846be53a34d52.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rurosaveruk/fapaxodod.pdfIn PDF document text
    • http://vumuvewegoseme.epizy.com/war_and_peace_movie_2007_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/97372073493.pdfIn PDF document text
    • https://07f52280-50dc-49c2-beec-a2e30bf849d0.filesusr.com/ugd/7b8f90_b59e73fc99b84459bb4bc7556385f5e9.pdf?index=trueIn PDF document text
    • https://1618b3f4-dcc0-4047-a816-eeb1cbe43c51.filesusr.com/ugd/a01749_7c1c190c330741c9915e57398d2c0aea.pdf?index=trueIn PDF document text
    • https://1c684d3d-b1aa-4d58-8f8e-408f9cf37fac.filesusr.com/ugd/64d889_3c33d3599f694ede811982f9fe936c51.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/university_of_calgary_inclusive_language_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/chrome_para_smart_tv_samsung.pdfIn PDF document text
    • http://kaderuzaxaje.rf.gd/giliwulevo.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/border_officer_pc.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_off0001385b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1385B 5500 bytes
SHA-256: 3a3b656f25ab86cf0c64052610a9cdc88b5a23cc062e092d917b46befb9348f0
font_01_sfnt_off00014b0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B0A 11048 bytes
SHA-256: 850a227e0cf45305a8565ca7333cbaf99e461b8e4ec2b2c3893dd8e6fa0177e8

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