Malicious PDF — malware analysis report

Static analysis result for SHA-256 a22f1706f8080500…

MALICIOUS

PDF

75.1 KB Created: 2021-02-08 22:54:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5106a9cdc6967eb2faba27f9ca603d97 SHA-1: 4c5825ff8fdbc389802fd8364aba6c9eb2960ba9 SHA-256: a22f1706f8080500d47a4aa168f53ee1fd2744e16c9ed1239d68bf07326a8eee
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://bologen.ru/aws?utm_term=audacity+ffmpeg+library PDF link annotation
    • https://cdn.sqhk.co/zagakobafot/sgemieh/lenovo_laptops_yoga_c930.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/iagjq5v/colonizer_organisms_in_urine_culture.pdfIn PDF document text
    • https://cdn.sqhk.co/giwumazusew/fichePL/nudedafi.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/jbjeogd/lokawanesirutuvisirojek.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380705/normal_5fed58930a8a6.pdfIn PDF document text
    • http://blue-tick-central.com/wewababugetamaom8op.pdfIn PDF document text
    • https://cdn.sqhk.co/jekuzedu/hiXjdKU/best_piano_lessons_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/reruzemafow/6TggVoU/logo_quiz_2020_answers_level_12.pdfIn PDF document text
    • https://cdn.sqhk.co/gubujurit/diehchc/british_home_renovation_shows_on_netflix.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/oIs9hhv/55721547035.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sebuvikibafil.epizy.com/dilinesakademisada.pdfIn PDF document text
    • http://napepezubebefiw.epizy.com/4908889937.pdfIn PDF document text
    • http://kotorewijog.epizy.com/angry_birds_go_hack_apk_2014.pdfIn PDF document text
    • http://lugirike.epizy.com/arbeitszeugnis_formulierungen_gut.pdfIn PDF document text
    • http://mazogatu.epizy.com/94180424324.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_off0000e75d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75D 5528 bytes
SHA-256: d6cedae42c75f898f2e89ca1dbea2472c2f9e4a41d7b233c2415d818ee7344e4
font_01_sfnt_off0000fa20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA20 11032 bytes
SHA-256: f6294b3be9e613a6d7302b37ba8574b19e3d9c5835ffd72ca1530488284429f5