Malicious PDF — malware analysis report

Static analysis result for SHA-256 bef4f3320539ee5b…

MALICIOUS

PDF

77.3 KB Created: 2021-02-19 21:24:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e328109cff1d44ef1dc78354f8be0c1c SHA-1: 37aebac04de058b7a4da2588a7820f3ac0b47bd7 SHA-256: bef4f3320539ee5b31b3014d183f325addf7dbe44e480ce9f3dcef9034574da2
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/123?utm_term=fresh+wind+fresh+fire+church PDF link annotation
    • https://cdn.sqhk.co/jagapifa/gcieiat/unicorn_photo_shoot_las_vegas.pdfIn PDF document text
    • http://gisomog.iblogger.org/app_that_gives_math_book_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/jgeHhbo/xikufamulajudedujubi.pdfIn PDF document text
    • https://cdn.sqhk.co/tesigasefaxe/jHhiPKM/wizami.pdfIn PDF document text
    • https://cdn.sqhk.co/wezufunin/iiiMbia/kabiponilo.pdfIn PDF document text
    • https://cdn.sqhk.co/kupejabel/zXjjvjd/steamboat_springs_hot_springs_open.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://limizepafut.epizy.com/formic_aldehyde_imi.pdfIn PDF document text
    • http://bixogonabu.epizy.com/99303492450.pdfIn PDF document text
    • http://ralivapoked.epizy.com/duladaguxifobokuwi.pdfIn PDF document text
    • http://lutidufewujasa.epizy.com/agama_yang_diakui_di_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/6474875030.pdfIn PDF document text
    • http://kizarepopudoso.epizy.com/minogelinaxirudewivog.pdfIn PDF document text
    • http://rujipezoj.epizy.com/android_2d_game_tutorial_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/lord_ayyappa_hd_photos.pdfIn PDF document text
    • http://janeresofopojaz.epizy.com/duxunidapegumiwegi.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_off0000f45d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF45D 4912 bytes
SHA-256: c90b2392009d778f43cfef99ae5e39fe4554a8e8dbec4a2def9a225826fffcf1
font_01_sfnt_off00010527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10527 10356 bytes
SHA-256: 918f32a46ef60a182ca449935b494a515757694a64dcd095534009642902030b