Malicious PDF — malware analysis report

Static analysis result for SHA-256 3afb79e5f43c785d…

MALICIOUS

PDF

68.9 KB Created: 2021-03-05 04:20:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 320e6714b7fdaa7bbf9f7ef813ed6d6d SHA-1: 9107c9c1ac9d6079a2a4f8e426dc9fa5942c4227 SHA-256: 3afb79e5f43c785d1ae3516aaa12fd19e152eaf4970313f157af032c4564f330
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/wix?keyword=bls+student+manual+2015 PDF link annotation
    • http://doweryklkq.space/mulapoximilegov4tqtp.pdfIn PDF document text
    • http://mishgen.com/vijadorup6byqb.pdfIn PDF document text
    • http://fkpravo.ru/482553205681uunb.pdfIn PDF document text
    • https://tunedewujanan.weebly.com/uploads/1/3/5/3/135345761/repebowipigigi.pdfIn PDF document text
    • http://karma-911.com/42780183501subyj.pdfIn PDF document text
    • http://new-leggins.site/kafka_tutorial_for_beginners4xih4.pdfIn PDF document text
    • https://tufubigin.weebly.com/uploads/1/3/1/4/131453284/1924058.pdfIn PDF document text
    • http://fimewot.xyz/credit_reporting_bureau_phone_numbers05rdn.pdfIn PDF document text
    • http://korsabarca.com/kokuzumipawsgkl.pdfIn PDF document text
    • http://dektesheff.xyz/celebrity_voice_changer_mod_apkjd269.pdfIn PDF document text
    • http://masterpowerpoint.com/26568175649qpf7r.pdfIn PDF document text
    • https://tisemijosugimuv.weebly.com/uploads/1/3/1/0/131070246/3cecd.pdfIn PDF document text
    • http://jirafka.space/sig_p226_holster_with_lightua89x.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/luropi/lymphoma_contouring_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/fishing_report_rochester_ny.pdfIn PDF document text
    • https://01c4c9a3-ee74-4db9-a65d-799443b8dbf1.filesusr.com/ugd/a64c8c_959696478edd4e45b1c8da280949b909.pdf?index=trueIn PDF document text
    • https://6ec3981f-6443-463b-a164-91fc69f101d9.filesusr.com/ugd/7603ae_8a968b57a5524effab13a93e99e46940.pdf?index=trueIn PDF document text
    • https://1a6defe7-92a0-4357-8a70-d3bce85d30c9.filesusr.com/ugd/385065_c0f88a2e4f2e448ba58df49c6f2129a1.pdf?index=trueIn PDF document text
    • https://0ecef3a8-5193-4df1-8dcb-1b7dd0f2be2a.filesusr.com/ugd/e6092c_599da5f94ab248979072a4c761e66c5c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/online_android_studio_platform.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/calculating_slope_from_two_points_worksheet.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_off0000cfd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD6 5372 bytes
SHA-256: 429d7a8b97d049eaa3e738e7e92cd34b418a1744c309e87084632ce7c78290af
font_01_sfnt_off0000e211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE211 10596 bytes
SHA-256: 171ea52c4212d9e2d8aa38b16ffdab2f154b3b970732adeaf7c911f1c680f122

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