Malicious PDF — malware analysis report

Static analysis result for SHA-256 486b369a287da900…

MALICIOUS

PDF

81.6 KB Created: 2021-02-12 07:48:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3c1d75931a27b5d3c2ca403d51ed9ca8 SHA-1: 7868fa3f817129081548a28e826024893bd482c2 SHA-256: 486b369a287da900a1aea3d90e8e50f6f11a893eaddc6f746ab704ca80e12420
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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/wb?keyword=citra%203ds%20android%20roms PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4468551/normal_5fcdf68029558.pdfIn PDF document text
    • https://biteledazuxol.weebly.com/uploads/1/3/4/3/134315761/darepotagodu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391636/normal_602006f4b6e13.pdfIn PDF document text
    • https://zopokirupinurow.weebly.com/uploads/1/3/1/3/131381130/dusakike.pdfIn PDF document text
    • https://cdn.sqhk.co/vepefilome/aBjaNgY/share_chat_tamil_love_status_trending_video_remix.pdfIn PDF document text
    • https://cdn.sqhk.co/vimerokil/jim25ji/tipubavin.pdfIn PDF document text
    • https://cdn.sqhk.co/zibomevuguli/fcxJhap/79502233743.pdfIn PDF document text
    • https://cdn.sqhk.co/kixowijeka/hh5ifJJ/ladalubibezuxisokuw.pdfIn PDF document text
    • https://kofosobi.weebly.com/uploads/1/3/4/5/134528260/pajev.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/Yib2he1/crosswords_with_friends_cheats_10_24_20.pdfIn PDF document text
    • https://cdn.sqhk.co/dolubivo/hRjbOic/general_hood_battle_of_gettysburg.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/ijdgigd/ear_agent_apk_pro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465403/normal_5fcbf991dd8a6.pdfIn PDF document text
    • https://cdn.sqhk.co/luwibajik/fHiajib/3184431700.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/fonazuzixagizir/xirugenusatute.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/73001354765.pdfIn PDF document text
    • http://zedorufusoli.rf.gd/excel_template_gantt_project_planner.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/kaththi_sandai_theme_ringtone.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_off000103d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D9 5008 bytes
SHA-256: 9853195f148e47d537b36497c1a87e6bfe65af4dfe2e42b13b1ca26d82e4fa4d
font_01_sfnt_off000114c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114C2 10880 bytes
SHA-256: 53fb2312ef3b570fe69ea16a0083387fc767efe3fe31701d01a0529d5d51b476