Malicious PDF — malware analysis report

Static analysis result for SHA-256 bed3b8dcae7310fb…

MALICIOUS

PDF

60.8 KB Created: 2021-02-07 06:56:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5dcf9875801f6d54894f34f5ac92ce42 SHA-1: 69c62ab1e5bf5076c6df82fb55c8a09e82ef0a38 SHA-256: bed3b8dcae7310fbaded7931481273424525cac0bac5f7971f11ee5382a071f8
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/wb?keyword=kala%20bazar%20film%20video%20song PDF link annotation
    • https://xosofanukofupa.weebly.com/uploads/1/3/4/8/134879033/23260ba1.pdfIn PDF document text
    • https://cdn.sqhk.co/jekidase/heghtgc/flight_simulator_3d_airplane_pilot_apk_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4531523/normal_5feb3fa8a32c0.pdfIn PDF document text
    • http://all-gopro.com/13418298603ysqsx.pdfIn PDF document text
    • https://xoludebule.weebly.com/uploads/1/3/4/5/134526363/885347a82276.pdfIn PDF document text
    • https://luvalebasewe.weebly.com/uploads/1/3/5/3/135326782/8905644.pdfIn PDF document text
    • https://polisurev.weebly.com/uploads/1/3/0/7/130740145/taxuwaveguka.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454811/normal_5fc80c2715a62.pdfIn PDF document text
    • https://nofokupefuw.weebly.com/uploads/1/3/4/6/134695722/kefepowa.pdfIn PDF document text
    • http://classkaod.ru/117545529954pipv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375541/normal_5ff3aad1d4ced.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/biwubeleba/94050037514.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/70077821093.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/colon_polyp_surveillance_guidelines_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/93850450958.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_off0000b318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB318 5444 bytes
SHA-256: e7211f318b1e0b9918224e4c7c4471e1cdbeea9c20a1c1d2f8179bf57a0bea86
font_01_sfnt_off0000c59f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC59F 9652 bytes
SHA-256: a36d2660450ca767f5d022c79f47c2c3fcd722a118c81e74fa999661772bc4c9