Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd297cd20ac28956…

MALICIOUS

PDF

65.7 KB Created: 2020-12-17 16:10:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 1329aa2a2b154d0a45b707bec650d6df SHA-1: 16f1ae502a6860dd877853336714e9d3f63e394f SHA-256: bd297cd20ac28956c6fc5bbae06f0f5cf3de839451c15d6fc9f6a1c8ccaf077d
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that appears to be part of a lure, disguised as a Minecraft redstone guide download. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffset.ru/strik?utm_term=minecraft+redstone+guide+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408871/normal_5fbc2b1d1cc48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463287/normal_5fca3da0b336d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371786/normal_5f89bb3a5d7a1.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
    • https://uploads.strikinglycdn.com/files/5f8fdb6b-be6f-4802-8bac-721ecc6ebb5f/100_doors_fe_level_25.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c33408d-3732-4fac-a329-7ca45da357a7/77145820687.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/737af436-9069-4933-a61b-364d1e348371/godinobezuxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6e9e5cc-c458-4cc3-8866-db0ef4f00fcb/hoke_county_schools_calendar.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc78a4e02915d4a16f90a6f/t/5fcd7108eb18547f4b9939ed/1607299337277/champions_points_calculator.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e800a879396864085b93/t/5fc593129ee0f32b8713018b/1606783763124/detomiwawawej.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5a3e840f1034a5cc929d3/t/5fd001146742965a9deef2ab/1607467286009/40788070526.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71db3f2b-fa18-415e-be7e-d59288d8a275/173763925.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58ea7984-4951-4ed6-acc0-ca5af7f937ff/dinner_bell_ham_retailers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d2fb928-225d-435f-85bf-90e390590226/wamidezexiwiges.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1964cf9-4c85-4b5e-a91f-e4daf1d1d2aa/91318669464.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_off0000b721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB721 5300 bytes
SHA-256: 58dceb5e5e0f0b3efb259239a13adbed39e8b16f9854f0f9d8af52cd0e854d96
font_01_sfnt_off0000c946.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC946 10124 bytes
SHA-256: 3bb1097a36380f592982bd9af2760f70b3078296a22db60f037ace6a78b1ae8c
font_02_sfnt_off0000ec04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC04 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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