Malicious PDF — malware analysis report

Static analysis result for SHA-256 8408039b12cb2752…

MALICIOUS

PDF

69.7 KB Created: 2021-03-17 04:39:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 0d4211d5f975a26af23a5ad5aa02029a SHA-1: 1578c2841dd65c5ce1cc8e3508c37d646d6df8d7 SHA-256: 8408039b12cb27523bd108e056045cb4e082957e3b2443c0da7c4a427e7d7683
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file exhibits characteristics of a phishing or malware distribution lure, indicated by its function as a link farm containing numerous external URLs. The presence of a critical heuristic firing for PDF_SEO_LINK_FARM and ClamAV detection as Pdf.Phishing.Trojan strongly suggests malicious intent. The embedded URLs, such as https://maypoin.ru/wix?keyword=endless+war+defense+download, likely serve to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://maypoin.ru/wix?keyword=endless+war+defense+download PDF link annotation
    • http://wijasagasipode.getenjoyment.net/41738223377.pdfIn PDF document text
    • http://zikevamakag.mygamesonline.org/davis_vantage_vue_6250_eu.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/best_app_for_interior_design_3d.pdfIn PDF document text
    • http://paxosij.mygamesonline.org/50210489749.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/kenejuforesowiwafabu.pdfIn PDF document text
    • http://pidagenavuziw.mywebcommunity.org/physical_chess_my_life_in_catch_as_catch_can_wrestling.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d2497fa9-5496-4194-9764-f4b168485e88.filesusr.com/ugd/eed259_2bcb82cc35ba435b83adc95ba1c980d6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/62abf89d-c3cf-4900-99a8-52ad6227cfa2/niwumizatorer.pdfIn PDF document text
    • https://c7bff75e-0a19-4817-9d47-fca4cf08161b.filesusr.com/ugd/3b6424_689b893dc8904c44837b78532345d98b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/adda83f2-4bb5-475b-8fc2-51e8874902f5/how_do_i_share_a_memory_on_facebook_to_my_story.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1b36e84-fd6c-4c57-ad4b-2cd42cc0b76f/are_expired_supplements_still_good.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/493aee09-fc21-4d5c-99e6-915d36b8aecc/georgia_tech_computer_science_laptop_requirements.pdfIn PDF document text
    • https://5fa60de5-32ab-41ac-ba65-77330e21e623.filesusr.com/ugd/2e16aa_30e131f3fc104dd4a913fa16a92aba60.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f82a9bf0-e7e2-4fb5-91ac-f7e9cde1dc42/93386577926.pdfIn PDF document text
    • http://wadoromutisagar.myartsonline.com/what_are_the_methods_in_social_psychology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94dc6fe6-47d3-49eb-8a97-345a031a37fe/fakabenofumef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b56d30d5-d4a4-4fa8-ac77-22ab8d8f9179/how_to_use_canon_rebel_xti_camera.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffb72f4a-fc6a-4d72-b765-2c5584a2def2/57728570454.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e91b031a-533f-4254-9775-1431b269b07a/what_is_a_due_diligence_request_list.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69cd1c19-7c40-47be-b84a-8ea0772652a5/how_to_learn_reading_and_writing_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d33d9449-4809-4357-b662-5a5f2b52f2f5/25257339921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae7d486d-cc55-4f8d-aeaa-6cded37d60db/74277501577.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_off0000d315.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD315 4948 bytes
SHA-256: 6c997f927d8f62b7b464390f1d8228f11934f2410d69579c4b739d178ec8c18f
font_01_sfnt_off0000e40c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40C 10440 bytes
SHA-256: fc357cb20cba3a91e2b7bb997ef1b10c8f0cb2d811e81c6081983a90d6d4153c

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