Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc7ede12a1c1783c…

MALICIOUS

PDF

67.4 KB Created: 2021-02-20 05:50:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: cf61d3721b28ab7a55c12ca8a6aa8260 SHA-1: aa14b1b75d44c550963fdc4813b48a68c35ac6b1 SHA-256: dc7ede12a1c1783c98a3a1b7aca3015af041556bfcc878ef7b65a16c88bb134c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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=english+as+a+second+language+san+antonio+tx PDF link annotation
    • https://pagununida.weebly.com/uploads/1/3/4/8/134861868/9363020.pdfIn PDF document text
    • http://kakaxazirobolob.iblogger.org/mixezazimipuroju.pdfIn PDF document text
    • https://zezawimikosalef.weebly.com/uploads/1/3/5/3/135329884/zeviguwurudusat.pdfIn PDF document text
    • https://sozatoma.weebly.com/uploads/1/3/4/4/134484551/xovivezof.pdfIn PDF document text
    • http://verexexomebot.iblogger.org/how_to_organise_a_football_training_session.pdfIn PDF document text
    • https://cdn.sqhk.co/padasagam/dgfjhhh/download_game_piano_magic_tiles_pop_music_2.pdfIn PDF document text
    • https://cdn.sqhk.co/gudijupimeb/hcQdhTA/cafeland_world_kitchen_celebrities_favorite_food_list.pdfIn PDF document text
    • https://xozejobe.weebly.com/uploads/1/3/1/4/131406614/4757f7e.pdfIn PDF document text
    • https://fisudobu.weebly.com/uploads/1/3/0/8/130813554/4560426.pdfIn PDF document text
    • https://cdn.sqhk.co/kipaselofuza/ggjgnib/animals_for_kids_vocabulary.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xonadisusuvav.epizy.com/acute_gi_bleed_guidelines.pdfIn PDF document text
    • http://zuvemodu.rf.gd/gesujewo.pdfIn PDF document text
    • http://mupigedosawi.epizy.com/best_vinyl_sheet_flooring_for_kitchen.pdfIn PDF document text
    • http://wupokutixu.rf.gd/nderungskndigung_information_betriebsrat.pdfIn PDF document text
    • http://gelepovasogadax.epizy.com/periwidolosenuwafil.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_off0000c98c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC98C 5132 bytes
SHA-256: 3fdf87ab1f7d6ce34af41958a73cf99bb29492a4c67aabef3eb6d4da65b98c25
font_01_sfnt_off0000db0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB0A 11208 bytes
SHA-256: 2ed5c3d03dbb7bd73639744ccfdd1a0afb0670b06999521aca65f2a1691c5204