Malicious PDF — malware analysis report

Static analysis result for SHA-256 3376d1eb6bf1f335…

MALICIOUS

PDF

67.6 KB Created: 2021-02-16 13:09:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8ee50ec8bc6ead11f85d4466183dc833 SHA-1: 5d2a718db904e9ca87df4146c3e1214804271f19 SHA-256: 3376d1eb6bf1f3350d06edecf739c80873e25aa7a41dcb6ffcc3668f51f23d43
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://leonvi.ru/wix?keyword=summer+in+the+city+nyc+doe+per+session PDF link annotation
    • https://litodamun.weebly.com/uploads/1/3/4/7/134710511/tagokutojetod_girep_gotutobuk.pdfIn PDF document text
    • http://idealica-ufficialeitalia.website/68596173977adryr.pdfIn PDF document text
    • http://sayseedokg.com/817939307881p351.pdfIn PDF document text
    • http://ketotreno.buzz/sweet_house_dessertar9fr.pdfIn PDF document text
    • http://fakts.design/rejejukinanlr27.pdfIn PDF document text
    • http://bachanalytics.com/xavubedalinopjuiy.pdfIn PDF document text
    • http://jesiwufap.iblogger.org/super_mario_maker_2_pc_free.pdfIn PDF document text
    • http://1green.space/viwigibegelyep4.pdfIn PDF document text
    • http://hdvideo.design/39010591272u2iwh.pdfIn PDF document text
    • http://usacreditcheck.info/41182093989d6uus.pdfIn PDF document text
    • http://lnstgramhelpcopyright.com/likes_and_dislikes_worksheet_ks21cmmh.pdfIn PDF document text
    • http://albl.ru/71803703204lvt8d.pdfIn PDF document text
    • http://idem-peshkom.ru/lugegitegapijusonemivizuz1n68.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/dovulavavo/gantt_project_timeline_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/media_and_entertainment_industry_in_india_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/endocrine_system_in_insects.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_off0000cc1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC1F 5276 bytes
SHA-256: be524822085e0b56a6cc92505f72d8332966413521435e967837ddac10029c03
font_01_sfnt_off0000ddf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF5 10368 bytes
SHA-256: 033bb83ce236b5184785bb0c97e8d76f3eaa21982a75afbeff44761189b825bb