Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcd39b644b33bc6d…

MALICIOUS

PDF

69.9 KB Created: 2021-02-13 03:51:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4772c68271a4a409b75a7cd8f43324bc SHA-1: 9073d717efd04f0e8e1e4145573da32971bb1ee1 SHA-256: bcd39b644b33bc6d64c0da9aa3422b54ae76d5c7c63b3681984447143e89de73
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://jottigo.ru/wix?keyword=craigslist+detroit+for+sale PDF link annotation
    • https://cdn.sqhk.co/riragimi/mhabigP/60268764057.pdfIn PDF document text
    • https://cdn.sqhk.co/dufelogaruf/4U18ZAP/67830248905.pdfIn PDF document text
    • https://cdn.sqhk.co/toralapiluw/ggiaihJ/red_white_black_white_red_striped_flag.pdfIn PDF document text
    • https://cdn.sqhk.co/gukawaki/fjfigii/wasuvibezezon.pdfIn PDF document text
    • https://cdn.sqhk.co/lesasafo/Kvhgrhg/top_trending_video_games_today.pdfIn PDF document text
    • https://cdn.sqhk.co/nukunudakiju/bihvhg7/meridian_157_chapter_2.pdfIn PDF document text
    • http://cozyplacefor.rest/romantic_helicopter_rides_near_mezp8xg.pdfIn PDF document text
    • https://mosaminaworite.weebly.com/uploads/1/3/1/6/131636744/pefik.pdfIn PDF document text
    • https://cdn.sqhk.co/papazokixe/UYieZha/mini_golf_westminster_md.pdfIn PDF document text
    • https://cdn.sqhk.co/dufolatik/iiiahcE/biwomudumilibijotot.pdfIn PDF document text
    • https://zopokirupinurow.weebly.com/uploads/1/3/1/3/131381130/dusakike.pdfIn PDF document text
    • https://cdn.sqhk.co/segisaxa/iaidhg7/idle_theme_park_tycoon_cheats_ios.pdfIn PDF document text
    • http://thedouche.xyz/buwogisugegdq2g.pdfIn PDF document text
    • https://cdn.sqhk.co/dijowasedop/kiieJlh/labizoxajasosisutulaw.pdfIn PDF document text
    • https://cdn.sqhk.co/jakufomego/KaigeWB/detafogipukux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://webexewidulub.epizy.com/90062541165.pdfIn PDF document text
    • http://kikidexawudipox.epizy.com/45032175654.pdfIn PDF document text
    • http://vumazudu.rf.gd/jadubusixux.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_off0000d6eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6EB 4980 bytes
SHA-256: 7775a0dc332b82febad4319a0af3ba665a0fc07c405b2135044e74aedf467252
font_01_sfnt_off0000e7e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E5 10164 bytes
SHA-256: 4805737569ba625a9af8963ba3938e4ca92dd71a66dbeddf62f208a145eef3dc

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