Malicious PDF — malware analysis report

Static analysis result for SHA-256 86b079d6993d5472…

MALICIOUS

PDF

72.1 KB Created: 2021-02-27 10:41:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f24cde48ca0e0672d4e417db7e1a91f7 SHA-1: d20ad3d040d490be0a8296ee999c1f1cf58d478b SHA-256: 86b079d6993d5472dd71af72e6034e9a7136c5c64025c730cf14c3d878d4d1d6
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://zajinet.ru/award?keyword=big+green+egg+beef+ribs+recipe PDF link annotation
    • http://ewop.space/26773573752q50xt.pdfIn PDF document text
    • http://kieverts.xyz/witakatajapotatghycd.pdfIn PDF document text
    • http://eagleaff.com/pimivukerujapolib2v38b.pdfIn PDF document text
    • https://jotitotibewava.weebly.com/uploads/1/3/1/3/131383271/polifimarivu.pdfIn PDF document text
    • http://dotixomovi.sportsontheweb.net/how_do_you_use_a_wrist_touching_blood_pressure_monitor.pdfIn PDF document text
    • https://tusuwijajibu.weebly.com/uploads/1/3/4/5/134517525/6575397.pdfIn PDF document text
    • http://load-bcp.com/barish_song_yaariyan_moviestjx1.pdfIn PDF document text
    • http://remontlegko.info/applying_uml_and_patterns_craig_larman9gtvs.pdfIn PDF document text
    • https://kowabimope.weebly.com/uploads/1/3/4/3/134359524/1624059.pdfIn PDF document text
    • https://cdn.sqhk.co/surofowudula/ZiejdQG/nba_live_mobile_basketball_mod_apk_unlimited_money.pdfIn PDF document text
    • https://gukamixi.weebly.com/uploads/1/3/4/0/134042495/8fe0af778d4.pdfIn PDF document text
    • https://cdn.sqhk.co/jupufopil/gdooACr/switched_at_birth_episodes_netflix.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jisijuvod.myartsonline.com/kojelixobufojonideguwubi.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/35731490103.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/jetimamujosudirudux.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_off0000de1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1B 5128 bytes
SHA-256: fb2a9df85eb65d02318ef690c0ef359ef5891957f2e2e9ed3ab4812b65de70a5
font_01_sfnt_off0000efaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFAF 10400 bytes
SHA-256: 7250b29d596204a67a6d62387f31784cd20e4ff9b3a2bc3bce0adc9401945db1