Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c5d7aa0bf69a854…

MALICIOUS

PDF

72.8 KB Created: 2021-02-24 14:45:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0b81202da71ed1e0325e58118a870c7b SHA-1: 99ca395256ea87ddf12ad0885c3a4332557f6de8 SHA-256: 1c5d7aa0bf69a85464f8bd92f5dbef696dcdfb303a97530b81646c64be559e39
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=akhenaton+jones+instagram PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4481409/normal_600387342801b.pdfIn PDF document text
    • http://hr-insider.com/51365888679ij319.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwovodegi/jgnseha/70808808201.pdfIn PDF document text
    • https://cdn.sqhk.co/zezegawutogu/wMWVieE/delicious_recipes_with_chicken_breast.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446283/normal_5ff3bfddeb985.pdfIn PDF document text
    • https://cdn.sqhk.co/xexerekija/2m3hfjj/rexexanufevepajuku.pdfIn PDF document text
    • https://zobaretax.weebly.com/uploads/1/3/1/4/131482953/sinoze.pdfIn PDF document text
    • https://kidogotetivi.weebly.com/uploads/1/3/4/3/134375399/536936.pdfIn PDF document text
    • https://cdn.sqhk.co/mofekuma/aiijgwI/zombie_bad_wolves_original_song.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452846/normal_602ff57264e13.pdfIn PDF document text
    • http://skout.tech/que_es_la_respiracion_aerobia_y_anae385dc.pdfIn PDF document text
    • https://fusagepewaliwe.weebly.com/uploads/1/3/5/3/135325652/befoje.pdfIn PDF document text
    • https://xikemusuvef.weebly.com/uploads/1/3/4/3/134322181/gupaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374682/normal_5fcc00dee38d3.pdfIn PDF document text
    • http://akfb.online/battleground_5_game2ra20.pdfIn PDF document text
    • http://begemotiks.fun/590060298040xsfo.pdfIn PDF document text
    • https://cdn.sqhk.co/vufisolepu/idijjek/xtreme_offroad_suv_driving_simulator_racing_games.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/92276658493.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/dynamic_stylesheet_react_native.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/whatsapp_for_nokia_lumia_640_xl.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/wuwajakenixox.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_off0000e1b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B5 5196 bytes
SHA-256: 34f41c994ab9bb784a50eaeb2478dbe93e620188cd54e2df76499afb685ba1cb
font_01_sfnt_off0000f340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF340 10168 bytes
SHA-256: 68658cf6ffa99c1d8602f66c64d48b9e47e801b9ff108942d2f54a338762c8ac

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