Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1666bba126b118d…

MALICIOUS

PDF

72.9 KB Created: 2021-03-04 10:22:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6fcac295cbbd4ec6d17ff9a3175100a0 SHA-1: a23b0109cf07fbd50f6ac10e577cf209e79b849c SHA-256: c1666bba126b118d2c1f67ad496edd108b02e05051baf6b3a4aec2cd9d33c8dd
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://baarspo.ru/award?keyword=whirlpool+central+water+filtration+system+reviews PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4458132/normal_60334199196b5.pdfIn PDF document text
    • https://dilozerekake.weebly.com/uploads/1/3/1/4/131452754/pivopuwoke.pdfIn PDF document text
    • https://baboxubawuxi.weebly.com/uploads/1/3/4/6/134666135/6684765.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501360/normal_5feb4e85584c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413369/normal_603e9ac134b2e.pdfIn PDF document text
    • http://zakazuvanadoze.66ghz.com/background_photo_karna_hai.pdfIn PDF document text
    • http://tometifo.getenjoyment.net/the_dragon_prince_season_3_episode_9_watch_online.pdfIn PDF document text
    • http://nizumewuminal.iblogger.org/apache_parquet_format.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413121/normal_5fe228b634525.pdfIn PDF document text
    • http://tejasatobes.medianewsonline.com/why_does_my_garage_door_open_but_not_close.pdfIn PDF document text
    • http://nevoburaferivab.22web.org/how_to_determine_language_fluency.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401723/normal_603ebc2e6f365.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374859/normal_5fc59b8c7634f.pdfIn PDF document text
    • https://zusabave.weebly.com/uploads/1/3/1/4/131406295/9400621.pdfIn PDF document text
    • https://durafozo.weebly.com/uploads/1/3/0/7/130740533/4767335.pdfIn PDF document text
    • http://lotiruwibek.iblogger.org/new_moon_stephenie_meyer_book.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://girasixaneza.rf.gd/miller_211_for_sale_canada.pdfIn PDF document text
    • http://sajomapujozokux.onlinewebshop.net/wazabikamag.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_off0000dfef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEF 5524 bytes
SHA-256: 7b37b4ef2b0bcd258c704a8310c6859cf8f7ecb233c699d98ea362da5902b8c7
font_01_sfnt_off0000f2b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B0 10328 bytes
SHA-256: 40611656a6191cc2aba61b9a8860ad17904c44a350b3c59bd55ea6089866ea8a