Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c88d08d9c0835cf…

MALICIOUS

PDF

75.2 KB Created: 2021-01-27 05:48:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a122bc09cf625ab37096621f5b144ef7 SHA-1: 40638e4d9994935b52ce4db29157c6ccfd2bf001 SHA-256: 2c88d08d9c0835cf9b634f672651ba3426304347eb06de354999ed49f120d78c
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/123?utm_term=supersu+pro+root+apk PDF link annotation
    • https://cdn.sqhk.co/telazaje/uX0hifA/50_s_rock_and_roll_guitar_licks.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374379/normal_5fe0e8a919d06.pdfIn PDF document text
    • https://fanamiwa.weebly.com/uploads/1/3/4/0/134013174/difuwemozapejotu.pdfIn PDF document text
    • https://cdn.sqhk.co/fabunavaxa/jaUgfDg/70794611958.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452852/normal_5ffe711c7f044.pdfIn PDF document text
    • https://cdn.sqhk.co/dolavalof/Eibgeih/97281745442.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494136/normal_5fd9785841496.pdfIn PDF document text
    • https://sixonawujow.weebly.com/uploads/1/3/4/3/134369174/543a2b0.pdfIn PDF document text
    • https://cdn.sqhk.co/narulaloro/eihH0L7/weapon_masters_roguelike_mod_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490519/normal_600f3d5f9513c.pdfIn PDF document text
    • https://cdn.sqhk.co/jivaduzar/BJUjcqr/xuzaboj.pdfIn PDF document text
    • https://cdn.sqhk.co/zidomirit/Kgehix8/xigutirifivugav.pdfIn PDF document text
    • https://cdn.sqhk.co/lilanoto/jghaWIN/download_game_nautical_life_mod_apk.pdfIn PDF document text
    • https://befuvabesuwab.weebly.com/uploads/1/3/0/7/130740391/5995119.pdfIn PDF document text
    • https://cdn.sqhk.co/gituridewo/hiigjib/garena_free_fire_booyah_day_diamond_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/motulobugaji/ijThaJM/bird_life_3_evolution_game.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fukewabukitiv.epizy.com/82563974950.pdfIn PDF document text
    • http://nodikisiti.rf.gd/bartok_viola_concerto_sheet_music.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_off0000e954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE954 4948 bytes
SHA-256: 3962c059d34ff7a047b9bebcc25ac247f52211bfe985afd1675dbd1a8b71e575
font_01_sfnt_off0000fa34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA34 10756 bytes
SHA-256: f26b69d3a22f2ecb970766f723e40a0ddd1f1891bf93c4b471365d23c90a2936