Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c450010b25a2e29…

MALICIOUS

PDF

69.1 KB Created: 2021-03-19 21:59:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: d025104ee0dfe1c946d84c33e62323b7 SHA-1: da13c3318a072ca55f7c5bc058e5e67a1eb02bee SHA-256: 0c450010b25a2e294fe0d03641edc5895dd04c9710c491d44b560fcd2df01918
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 URI pointing to 'https://lozipotod.ru/wix?keyword=township+cheats+reddit', which is likely the malicious payload delivery mechanism. The document body, though heavily obfuscated, contains text related to the URL, suggesting a lure to a fake search result.

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://lozipotod.ru/wix?keyword=township+cheats+reddit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4499319/normal_604175b4855bd.pdfIn PDF document text
    • http://mists.space/intermediate_accounting_15th_editionseflc.pdfIn PDF document text
    • https://cdn.sqhk.co/naliwanik/TGjehiI/xoxubavaxobezu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453129/normal_5fc74f648afa6.pdfIn PDF document text
    • http://legendarycraft.ru/jorge_bucay_dejame_que_te_cuente_englishvk2i3.pdfIn PDF document text
    • https://cdn.sqhk.co/dikizumi/hYDighj/72434741804.pdfIn PDF document text
    • https://cdn.sqhk.co/fegibowaxus/gehcidk/sasoxolujesovizeboj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zikeko/comparing_numbers_worksheets_for_grade_6.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20f4a728-192e-4089-bb43-38e43db9156b/weight_loss_tracker_chart_app.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/2086769424.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4c2775c-26ac-438d-a7c2-11cf4b2e0122/how_to_use_mendeley_referencing.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/jeweg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be5dd983-435b-423b-99e9-d35f180bff52/what_to_cook_in_a_rice_steamer.pdfIn PDF document text
    • https://s3.amazonaws.com/xijalovelokolep/biennials_triennials_and_documenta.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/wetas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7df7c028-389c-45ff-8843-977ad99bce4b/arris_tm722g_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/38329756575.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_off0000d4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D6 5172 bytes
SHA-256: acdd5638fb9d592e5db303a2ce7e799304a978fc3be36b81bc2db5dce5f298f9
font_01_sfnt_off0000e677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE677 9684 bytes
SHA-256: 8fba43c455bd5632fe5b124dca2f707b17fe4ea32bdf57a9ac1ddf9adf85a4e9

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