Malicious PDF — malware analysis report

Static analysis result for SHA-256 94f845361a952657…

MALICIOUS

PDF

71.2 KB Created: 2021-02-22 08:26:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a0589c7c8849ab008e3e5b66a82ef363 SHA-1: ac0c7af6dedf7f0dfee6b083025ec317600df69d SHA-256: 94f845361a952657f8dece1d4572b88537e9bdc9079adb6972858c2409237f81
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=the+trumpet+of+the+swan+online+pdf PDF link annotation
    • https://piturerakilapes.weebly.com/uploads/1/3/0/7/130775197/risaxuxikodedumamow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468843/normal_5ff13f75913f7.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/ieghigt/zepeto_app_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/tategupet/6ewjjOK/26279146321.pdfIn PDF document text
    • https://cdn.sqhk.co/tezofugowura/mJjcd6p/captain_america_civil_war_2_sides.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/rgesibD/mekekumuwasimafe.pdfIn PDF document text
    • https://cdn.sqhk.co/pakiwujipubi/hYjjcLM/8352750807.pdfIn PDF document text
    • https://butemupow.weebly.com/uploads/1/3/5/3/135338881/880912.pdfIn PDF document text
    • https://reboxulowewo.weebly.com/uploads/1/3/1/4/131407709/6577489.pdfIn PDF document text
    • https://mapijilut.weebly.com/uploads/1/3/0/8/130873952/4842018.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460723/normal_5ff64c49e04c8.pdfIn PDF document text
    • https://namadifudemabum.weebly.com/uploads/1/3/0/8/130813063/vinaferuba.pdfIn PDF document text
    • https://zuwukozoxuwiged.weebly.com/uploads/1/3/4/7/134713444/xanibatu-kipegi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472213/normal_60300d2561eab.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/pusori/picsart_gold_apk_free_2019_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/21632991436.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/chernobyl_disaster_bbc_drama_documentary.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/microsoft_flight_simulator_x_acceleration_system_requirements.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/appium_android_example_java.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_off0000db2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2D 5324 bytes
SHA-256: 6282fcf884e7c99365ed452ed320801103c3369dd893262a1dcd8614a1949b58
font_01_sfnt_off0000ed25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED25 9992 bytes
SHA-256: 998554440d512cf7838babef93aa546f58066d33df707faecf518ba9830dcca9

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