Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6a5a8a5cd7f4789…

MALICIOUS

PDF

82.7 KB Created: 2021-03-15 02:49:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 47ac16fa8423d2d6b6f664e84ebb6a39 SHA-1: 22a756a1f30f105eaddc1b1fc734e64674fb64e5 SHA-256: d6a5a8a5cd7f4789a8d10c26dec7df8d3b250fa086d87fd381dfc4e1f9b78d10
126 Risk Score

Malware Insights

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

The PDF document contains numerous external URIs, many of which are part of a link farm hosted on disposable domains, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to deliver a second-stage payload or phish credentials. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to exploit users through deceptive content.

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://ponafet.ru/strik?utm_term=ge+potscrubber+640+dishwasher+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4410002/normal_600aad6ad84c5.pdfIn PDF document text
    • http://lewijufe.sportsontheweb.net/2393432089.pdfIn PDF document text
    • http://lozomaneje.getenjoyment.net/how_to_crochet_a_circular_granny_square.pdfIn PDF document text
    • http://joritirumag.mypressonline.com/ict_business_analyst_job_description.pdfIn PDF document text
    • https://pilonalamajavex.weebly.com/uploads/1/3/1/1/131164122/rirojutitirom_mukowumemidapi_duzatudojedu_kerinerepadig.pdfIn PDF document text
    • http://gaxesujite.medianewsonline.com/dokewunobuxonasibisubop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487194/normal_6033bd0cc65cf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417122/normal_5fcf65f7f2a18.pdfIn PDF document text
    • https://nujokolove.weebly.com/uploads/1/3/0/8/130874035/4454366.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/3037542608.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/project_management_masters_degree_near_me.pdfIn PDF document text
    • http://nawumamarupojo.22web.org/how_to_display_data_from_database_in_html_python.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://288c7b4b-0494-48f6-8ee2-9dd519b96b0a.filesusr.com/ugd/a107db_d9595bd4716749398d40aa523f485ad1.pdf?index=trueIn PDF document text
    • http://nijopupeboxisa.epizy.com/shola_aur_shabnam_video_song_pagalworld.pdfIn PDF document text
    • http://magetamuwunaze.rf.gd/guidecraft_dress_up_cubby_center.pdfIn PDF document text
    • http://wozimape.onlinewebshop.net/nobawovemajefitiwavaxa.pdfIn PDF document text
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_8ec6e5c7e6be46c9ad14ab11a0495e49.pdf?index=trueIn PDF document text
    • https://9a4203bb-6ff2-4ef1-9c63-3f113f84a884.filesusr.com/ugd/ea9bdf_52867def8ec44275a8fc1b78b9dad659.pdf?index=trueIn PDF document text
    • https://506dbbd1-d4b3-44b1-a4c9-6b5d0cab6a23.filesusr.com/ugd/c75f60_5834afe2b6794312a3b80f86913ed769.pdf?index=trueIn PDF document text
    • https://f4a80ce2-0a24-44e2-aff7-13c87a434ee9.filesusr.com/ugd/ace063_2a8b64a37e064de5b8615e08d23f1798.pdf?index=trueIn 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_off000102b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102B5 5960 bytes
SHA-256: 4865b37956570d0e1c422bd627560d7c2379a6922bc2dccf099a686373244d0c
font_01_sfnt_off000116e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116E9 11368 bytes
SHA-256: 878aaabc5a419ee148775c9bcfa18b38578e6da70910f374635928118029a1f1

Open this report in the interactive analyzer, or submit your own file for analysis.