Malicious PDF — malware analysis report

Static analysis result for SHA-256 038ed49c96390aa6…

MALICIOUS

PDF

91.3 KB Created: 2021-05-22 12:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: dadaa0a48a528e572f904a80fe330085 SHA-1: e54c3f749eb86186bf9c1dcfe6125720595e1a68 SHA-256: 038ed49c96390aa6c718c69590ad61c6e5271fff76fe1c7e4a587ce194bd6619
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to exploit vulnerabilities or trick the user into visiting a malicious site.

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://druttle.ru/strik?utm_term=elite+dangerous+joystick+keyboard+layout PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417824/normal_5fe1844686aad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527747/normal_6026eaab6d4bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372735/normal_5fd92f1f61108.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377924/normal_5ffc7fed1d756.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410447/normal_5feb6e5866307.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419847/normal_600f203fa6779.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445106/normal_600f130533f5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465264/normal_601831a84798b.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/cb99feb6-ead0-4c9a-b9a2-8ad52be7a298/3445704982.pdfIn PDF document text
    • https://s3.amazonaws.com/lefemijip/adobe_after_effects_2015._3_full_version.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/asp.net_with_c_tutorial_for_beginners.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e49df44-4f7d-4aff-b362-b878d5498c22/what_does_the_term_game_of_chicken_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bb8d005-cf4b-4680-9e06-0f5d548fdeac/what_is_a_behaviour_management_plan_bmp.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/63516390397.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08e6cf08-8e94-4d0c-a2f2-248fee3d2226/head_first_python_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b2a133f-a5f8-4148-a01e-0f2c09d4a213/dance_songs_playlist_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41ae2a58-8081-4974-8b31-3a28b58ee21f/55674459859.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/ropazafasuxigipe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/307e5e26-8ee0-423a-bd57-a330b87e937c/58750405818.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1e76758-cb2a-4072-ac58-2f073f033b94/what_books_are_considered_classic_literature.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_off000124b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124B8 5444 bytes
SHA-256: 72c863c2a341ecf15aa8f57b271c5d4937096dc68685fe4707ffbf9313e584f4
font_01_sfnt_off00013759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13759 12080 bytes
SHA-256: 10fe6965b8f7b58aa7ab8242a6106dfcc56da8817318587488548993bb82a1ac

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