Malicious PDF — malware analysis report

Static analysis result for SHA-256 304be6f3f5f9b4e5…

MALICIOUS

PDF

81.5 KB Created: 2021-04-10 19:44:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 69b3554ddaad24b3de4a6b5a5138248b SHA-1: 6d5771f9b4923a5f3413cc6d7702e06ad53a125d SHA-256: 304be6f3f5f9b4e545a4b07eca2d7c66ce86fd27fb309416f0fb867b5f87b194
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a large number of external links, many of which point to disposable hosting or redirector infrastructure, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further support its malicious nature. The embedded URLs suggest an attempt to direct users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9405

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=star+wars+edge+of+empire+core+rulebook+pdf In PDF document text
    • http://devivitonewe.sportsontheweb.net/62239161748.pdfIn PDF document text
    • http://tikopariwoxa.mygamesonline.org/1888651731.pdfIn PDF document text
    • https://rezepurobej.weebly.com/uploads/1/3/5/3/135327696/tigenajoxiju.pdfIn PDF document text
    • http://dimozakebaba.scienceontheweb.net/readings_for_sociology_8th_edition.pdfIn PDF document text
    • https://vawosikajoj.weebly.com/uploads/1/3/1/4/131438279/1281726.pdfIn PDF document text
    • http://natosabi.mygamesonline.org/25703647472.pdfIn PDF document text
    • https://futibiwis.weebly.com/uploads/1/3/1/4/131408183/fekufekurojekij-jipufupafu-tufivinatulab.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/91817965917.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a74009b-3966-4389-9036-23091f260b2b/how_to_use_a_ritetemp_thermostat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bad08c7-b11c-4528-933b-94c31d8044ba/inorganic_chemistry_examples_in_everyday_life.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a76466f-a2f7-4990-80f7-53087d937ce6/does_damon_fall_in_love_with_elena.pdfIn PDF document text
    • https://f3c4034a-4a94-4c47-b6c5-0445626d7bf8.filesusr.com/ugd/655f09_0eb06bfb3be549a0989622337d35495a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e9f444e-b251-4b36-9692-e4baf2df0fcc/nilovuzokesasanema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/708c3089-5696-4c87-8d91-f414d1b86482/fapatotepebolen.pdfIn PDF document text
    • https://8f6f9f04-f977-4239-955d-f6aecf2dd879.filesusr.com/ugd/81cd61_be424d26eb89484a8dfac45e543e8549.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/64a3f15f-773e-402b-aaa5-73a021d35764/vomudilopozisuriwuvamiwub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb4f532a-86ad-4e2a-8b14-464d6047c108/how_do_you_connect_a_countertop_dishwasher.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/17950386116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bcf82d7-f5ce-4927-826c-095bfe5a30a0/xogabetetojig.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/music_for_sight_singing_free.pdfIn PDF document text

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