Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ba1c82f2fda9bf…

MALICIOUS

PDF

71.0 KB Created: 2020-12-21 09:46:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 1527ed433882b5a3cbf087b43bd27bfd SHA-1: 14087ecd89627e09063f658bc27c704071e53faa SHA-256: 29ba1c82f2fda9bf94caea4474cbace6c6a54e8d766a33275b7a7b97d0d7817e
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that leads to a suspicious domain, likely intended to host a phishing or malware delivery page. The document body, though heavily obfuscated, suggests a lure related to electrical wiring diagrams.

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://traffnew.ru/strik?utm_term=residential+electrical+outlet+wiring+diagram PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4500200/normal_5fc5bf6695478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470703/normal_5fb599e1f382d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9261a28-416a-475c-b790-6df20d3316ae/backyard_baseball_characters_wheelchair.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/662a7f07-49af-46e4-84dc-5626fb80a599/1295619267.pdfIn PDF document text
    • https://s3.amazonaws.com/xefezesebusu/80708235249.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cae39079-fc42-4fb6-a433-021fd413af47/72440915115.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6364adc3-8114-4666-8c98-bc7e10e2c17f/10977671967.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9b16591-3eae-47cf-96af-a560773852e6/88405870945.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d616639-9468-425e-a83c-3e07da9e9687/72352133563.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f82cbb87-4cc2-4476-afc9-5850350b2702/xibekatizatitodibim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/853a132e-4eef-4b77-9e06-437a7f11e70e/bible_games_jeopardy_powerpoint.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca0742ce-6a5e-45db-9492-a558af310a6e/md.emu_apk_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba211f57-76d8-4393-9d6a-0e4c702ef3a5/coterminal_angles_worksheet_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/703634c3-8eea-445d-bb8a-c26976ff7cac/73711704354.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cc2bf61-2bee-4604-a0ff-379e4e7c703c/genawako.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_off0000da1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA1A 5356 bytes
SHA-256: 96bccb499c17af64a45120cf594ea35b58b76d2f8197af2bacf779b0b6457458
font_01_sfnt_off0000ec56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC56 9924 bytes
SHA-256: 00f0149a5cc7ddd061b9c44696dc82e823c035cdc857774b4c7e145661bcd355

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