Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ce4840e9aea04f7…

MALICIOUS

PDF

73.2 KB Created: 2021-03-03 12:45:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a934b0d62dc165a248b374e85c345cb6 SHA-1: 64db861145199e7e8fd6dcc039204d9f7e3f5c25 SHA-256: 6ce4840e9aea04f70a2a6855c5ba8d555f5a569d2b62a0aa0eb880d19018db90
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/award?keyword=dictionary+of+cultural+literacy+ebook PDF link annotation
    • https://cdn.sqhk.co/wedegetuso/1ftjO9K/phoenix_force_moon_knight.pdfIn PDF document text
    • http://newsportstechnology.ru/project_management_methodology_presentation_pptx3372.pdfIn PDF document text
    • http://gakmancreatures.ru/zoweziliranuzatulx9h0.pdfIn PDF document text
    • http://affilateapp.online/the_jesus_puzzle_earl_dohertyol65y.pdfIn PDF document text
    • https://cdn.sqhk.co/bibolaned/eyhher7/the_archers_radio_4_listen_live.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/cat_in_the_hat_movie_quotes_thing_1_and_thing_2.pdfIn PDF document text
    • http://yewes.space/40725871969cs6cd.pdfIn PDF document text
    • https://cdn.sqhk.co/lapefuxolu/jcmjdia/western_manor_apartments_south_bend.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuzigup/jbjiLhb/9528901625.pdfIn PDF document text
    • https://tamipabofoj.weebly.com/uploads/1/3/4/8/134876193/9113460.pdfIn PDF document text
    • http://loduwij.scienceontheweb.net/tidowok.pdfIn PDF document text
    • http://duxinivodozular.mywebcommunity.org/juxoxer.pdfIn PDF document text
    • http://supariwepexafat.mywebcommunity.org/tapelitavininujajivolajeb.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/zaxawetawupo/danexaxijawixuzonabu.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/dota_1_items_guide_for_heroes.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/roland_r880_service_manual.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_off0000e3c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3C7 5004 bytes
SHA-256: aed0902b55a600d6a0126e42993d303847d94991d1030209844acc8a80e3d788
font_01_sfnt_off0000f4ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EE 10208 bytes
SHA-256: 673f7b084ed601d02d186ac621bc500356e7a0444f9f08fcf106f19145468822