Malicious PDF — malware analysis report

Static analysis result for SHA-256 22644a96038d9a45…

MALICIOUS

PDF

66.0 KB Created: 2021-02-14 07:38:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4051f2119efc7942afef916545564bcd SHA-1: df459fbed786c642041ab7d17d2054dfea2840bd SHA-256: 22644a96038d9a4527740b1686eb97b1cae658031bf098c95b892cd29623cfbd
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://leonvi.ru/wix?keyword=bloodborne+official+guide+pdf+download PDF link annotation
    • https://kigekasomek.weebly.com/uploads/1/3/4/5/134598498/aa370806e491.pdfIn PDF document text
    • https://batusuxejodasav.weebly.com/uploads/1/3/1/8/131857782/xutironem.pdfIn PDF document text
    • https://dubitofux.weebly.com/uploads/1/3/4/4/134458445/3801113.pdfIn PDF document text
    • https://rizogedimawe.weebly.com/uploads/1/3/0/7/130739598/123644ec6c15e.pdfIn PDF document text
    • https://lirigudufov.weebly.com/uploads/1/3/0/7/130776684/mabakifodurodev.pdfIn PDF document text
    • http://kokesatur.22web.org/wazitinuxerevodu.pdfIn PDF document text
    • https://kekufekogaj.weebly.com/uploads/1/3/4/7/134768560/4301d3a3c5.pdfIn PDF document text
    • http://nomanodix.iblogger.org/sap_abap_technical_interview_questions_and_answers.pdfIn PDF document text
    • https://fenizivafuno.weebly.com/uploads/1/3/1/3/131380836/xapegufevedorula.pdfIn PDF document text
    • https://vumifedesonuzik.weebly.com/uploads/1/3/4/8/134849268/rupavinis-bosiradova.pdfIn PDF document text
    • https://ludamezowi.weebly.com/uploads/1/3/4/1/134131800/f5145ed45ec2.pdfIn PDF document text
    • https://niforowekid.weebly.com/uploads/1/3/1/4/131406966/550b3c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zozezofi.rf.gd/bringing_them_home_report_essay.pdfIn PDF document text
    • http://lapakak.rf.gd/69061979817.pdfIn PDF document text
    • http://vawigopowapab.rf.gd/matchmaker_s_playbook_movie.pdfIn PDF document text
    • http://xugibomexepef.rf.gd/alcohol_use_in_pregnancy_guidelines.pdfIn PDF document text
    • http://rapuwovire.rf.gd/grade_3_math_worksheets_elapsed_time.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_off0000c4ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4AD 5428 bytes
SHA-256: 37b73b26a6b11b8217e462b00d7f808992927bf2e6e4ca74bd7234019c7f10ca
font_01_sfnt_off0000d745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD745 10476 bytes
SHA-256: a2d3ed8d7ea2c1208a3b025b3dede5cc605798970726f365b5e76671720abb34