Malicious PDF — malware analysis report

Static analysis result for SHA-256 457bfa037ee38d28…

MALICIOUS

PDF

71.0 KB Created: 2021-02-10 00:06:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1d941c977c7881cc1077ac3535747560 SHA-1: 759b15a4085de790e1837186996a5f2eec51e579 SHA-256: 457bfa037ee38d28d1889adeb413963b3035eb11117be49b7fe8024c20d24856
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=kid+cheerleading+uniforms PDF link annotation
    • http://dakejexisumupok.iblogger.org/grey_king_size_fitted_bed_sheet.pdfIn PDF document text
    • https://lufumapapolag.weebly.com/uploads/1/3/4/3/134353855/vosafibefato_papojujotul_zivexuwofap_rubirafinumax.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408587/normal_5ff442ac1d557.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370080/normal_5ff48deaaac4c.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/dmlgTgj/kurudijuwin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427313/normal_602099416a78c.pdfIn PDF document text
    • http://faketikus.22web.org/53108677424.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483856/normal_6015b0de822f5.pdfIn PDF document text
    • http://pubggaming.online/jegaxizh9ety.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421460/normal_5ffe83e176509.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/tevigotu/preserving_electronically_stored_information.pdfIn PDF document text
    • http://lubunazunenixo.rf.gd/rezoperoxozavoz.pdfIn PDF document text
    • http://dobupefibukin.epizy.com/reflexive_and_reciprocal_pronouns_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/56469834730.pdfIn PDF document text
    • https://s3.amazonaws.com/dibedamoka/einthusan_tamil_movie_online.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_off0000d61b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD61B 5404 bytes
SHA-256: fcf8c2279e103d0824a7c3f305b08cf30321b3c4e189e1a37a6fd7d536317465
font_01_sfnt_off0000e85c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85C 11532 bytes
SHA-256: eb3560693f0503d6debc73db4b7c7b10d19fa218383e4edccf694c7b55ca60b6