Malicious PDF — malware analysis report

Static analysis result for SHA-256 88f8bca788510df6…

MALICIOUS

PDF

71.4 KB Created: 2021-02-24 14:32:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7882d1f85a632fd0ea0af7ff0a9d94cf SHA-1: b494900f5c34eab9fc8aa4a6ad0f046b00bb57e3 SHA-256: 88f8bca788510df6f442d2a78f238c6d3594f2a92be04801c8e12cd916b27491
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/aws?utm_term=ge+sunsmart+digital+timer+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/nawiwola/D2XhgfP/zipaxani.pdfIn PDF document text
    • http://wamepiguvoj.iblogger.org/file_adalah.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393220/normal_5fda4fee94d55.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/idifLNZ/rodula.pdfIn PDF document text
    • http://businessoutsourcing.org/invitation_letter_template_for_workshophb6yc.pdfIn PDF document text
    • http://wusodopepufex.66ghz.com/ristoranti_formentera_bocasalina.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490141/normal_5fd77c28f1717.pdfIn PDF document text
    • http://circulyarkadigital.xyz/41588285809wf5tf.pdfIn PDF document text
    • https://cdn.sqhk.co/dedizajo/djjXjfB/free_music_apps_for_android.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448991/normal_5feb4194992fe.pdfIn PDF document text
    • http://libertinemodels.com/metal_madness_pvp_car_shooter_twisted_actionn0fi7.pdfIn PDF document text
    • http://present-mag.ru/ziwedejofivafudoverukezvby6.pdfIn PDF document text
    • https://cdn.sqhk.co/rasirise/dhdAYjc/28098532468.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://larazegabolulaf.epizy.com/one_piece_bounty_rush_reroll_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/kugisebexifo.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_off0000d744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD744 5392 bytes
SHA-256: 740415c9cac2ad8cdbbb7a71707ac3dbd0278cbfd6994f33b605860b7b66c2d5
font_01_sfnt_off0000e984.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE984 11844 bytes
SHA-256: a4b0dd03b78468eada5fdc8d493bc364db58709f1d7bbe52c3bcbb8ce91ee302