Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1af83ee3bad887c…

MALICIOUS

PDF

69.1 KB Created: 2021-03-06 09:20:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 67abee5176c83a03c92314b6f788a7ed SHA-1: 2929d04549bad98b14fbab686297cfb3d8c9a9af SHA-256: a1af83ee3bad887c2aee1efaa26afc4862d0fe2d09bfe96d573754c95cd79c21
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://nipisod.ru/award?keyword=lola+and+the+boy+next+door+audiobook+free PDF link annotation
    • http://rbqjkwklnd.xyz/el_perfumew3mxy.pdfIn PDF document text
    • http://fabermanufacture.ru/wotedoladogowafiv03h92.pdfIn PDF document text
    • https://nekawosewifij.weebly.com/uploads/1/3/2/8/132815774/1319230.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/b1c393.pdfIn PDF document text
    • http://all-system7.club/datakazeyc143.pdfIn PDF document text
    • http://gesetaxoxu.sportsontheweb.net/how_much_does_it_cost_to_rent_a_soft_serve_ice_cream_machine.pdfIn PDF document text
    • http://akmurzina.com/what_are_the_fox_channels_on_dish_network21hv2.pdfIn PDF document text
    • https://cdn.sqhk.co/purilusevike/iRzo3gj/66521172236.pdfIn PDF document text
    • https://cdn.sqhk.co/gutipefu/jihghg0/dark_chocolate_ice_cream_recipe_cuisinart.pdfIn PDF document text
    • http://bridgecommerce.com/why_is_my_bluetooth_mouse_not_working4esdf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://kuzemepusiloj.onlinewebshop.net/what_does_culture_media_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2aad4dcb-0459-4305-a3c7-36ac1c7cb8dc/74655804868.pdfIn PDF document text
    • http://tiwatimab.atwebpages.com/summon_monster_pathfinder_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd2f42f4-78b3-4809-b7ee-238272404a19/poulan_pro_20_inch_50cc_chainsaw_pp5020av.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E6 5012 bytes
SHA-256: 3756e3b815af56e55ceb0236280418dbda84a585c200e651edb4bf97ce67d609
font_01_sfnt_off0000d8e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E7 9320 bytes
SHA-256: 94fcd7e3afd2a3c8e58455d1efcb03f7ec484f15f5d19e4199c691e043b495fd
font_02_sfnt_off0000f8dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8DD 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230