Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90e980a4d06b201…

MALICIOUS

PDF

67.3 KB Created: 2021-01-23 05:29:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 167d72b772f1eddea2bb2f5fdff0c45d SHA-1: da9cb3f8ae22799a08a9d341848c4474254e71e7 SHA-256: d90e980a4d06b2013d5cb12723538f06e39c0dbd070229e706911b6f0a561ca6
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://bologen.ru/123?utm_term=breaded+pork+cutlets PDF link annotation
    • https://cdn.sqhk.co/kurinunuwor/c3L79if/captions_for_pics_with_your_best_friends.pdfIn PDF document text
    • https://cdn.sqhk.co/faxenukev/Lcieic4/blaze_monster_truck_cartoon_episodes.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/Jib5gc6/labyrinthine_dysfunction_wiki.pdfIn PDF document text
    • https://cdn.sqhk.co/vumulevezuf/iejbvo5/wapexoberobisogamig.pdfIn PDF document text
    • http://sazaleve.22web.org/life_skills_questions_and_answers_for_students.pdfIn PDF document text
    • https://forijadezututeg.weebly.com/uploads/1/3/0/8/130813765/fizapo.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/hhhjfgV/zodosatowaboketiv.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/hPcjjjj/facebook_lite_download_for_pc_windows_8.pdfIn PDF document text
    • https://cdn.sqhk.co/lafugafeniki/ziahfMw/air_force_1_white_mens.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kutubuge.rf.gd/ganudifenivejanuzaxadema.pdfIn PDF document text
    • http://ruxurosagogaru.epizy.com/traveling_parallel_lines_worksheet_answers.pdfIn PDF document text
    • http://devepovamijube.epizy.com/nebimulivutebe.pdfIn PDF document text
    • http://nawugem.epizy.com/bazel_android_studio.pdfIn PDF document text
    • http://xofawuriduk.epizy.com/julewikomobejatepenozat.pdfIn PDF document text
    • http://tinejamuwaki.epizy.com/chandrayaan_1_information_in_marathi.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_off0000caea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAEA 5180 bytes
SHA-256: f2396b2205244e82c9edb9d3820de78046d2831864678d6bab2846bc9bf24ba2
font_01_sfnt_off0000dc98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC98 10596 bytes
SHA-256: 21f3df7662e9606b42a8f21bc5d7f8d68186de3b884f681feea2f56eee0be4f4