Malicious PDF — malware analysis report

Static analysis result for SHA-256 818402a0df12821b…

MALICIOUS

PDF

78.5 KB Created: 2021-03-31 09:18:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2fce83d3246805a90f3dda8eddfe0ac3 SHA-1: 7409ab0d7d4434f75e73fda69930f49329bb324c SHA-256: 818402a0df12821b5ac3ccb46e519fb2d55c1986155a408686f7f4511e69d057
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a lure for downloading a game patch. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were directly extracted, the presence of external URIs suggests the PDF is designed to redirect the user to a malicious site or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/123?utm_term=stalker+clear+sky+patch+1.+5.+10
    • http://businessmentality.com/7875807772yp1is.pdf
    • https://cdn.sqhk.co/xajegakagiz/6CkdUjc/my_bowling_scorecard_app.pdf
    • http://wubowobipevoto.mywebcommunity.org/autocad_3d_tutorial_for_mechanical.pdf
    • https://cdn.sqhk.co/xonepogafix/gGPSgiG/video_player_app_for_android_apk.pdf
    • https://cdn.sqhk.co/kevekelobivo/aicbcLj/tuxaxefiminadunese.pdf
    • http://mopewogubit.getenjoyment.net/negative_impacts_of_globalization.pdf
    • http://japancar-sib.ru/how_to_setup_hp_deskjet_15125jdld.pdf
    • http://sweetygirl.club/53033642035tihz5.pdf
    • https://cdn.sqhk.co/mifijizudi/ifXCxcU/ganineler.pdf
    • https://cdn.sqhk.co/tisojubew/gYXNiii/criticism_of_contrastive_analysis.pdf
    • https://cdn.sqhk.co/kolokejo/jjji9gi/39380977021.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/c6b0f0db-8502-48ba-9cfc-1f53e7488160/16951647431.pdf
    • http://luvexuko.rf.gd/mijoxumopubujorosev.pdf
    • https://uploads.strikinglycdn.com/files/8f524b9b-2d8e-47e4-9549-7a6cd69baa12/city_of_ashes_quotes.pdf
    • https://uploads.strikinglycdn.com/files/a83325ca-5c00-46e0-be75-19ea434ad990/el_destino_manifiesto.pdf
    • http://mubaviz.epizy.com/parazurugewigi.pdf
    • http://zakefuki.myartsonline.com/basaniwoxu.pdf
    • http://tereraje.rf.gd/96965118470.pdf
    • http://walogoke.epizy.com/powerpoint_2013_design_themes_free.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2cc.bin
4bf823d29340a1b6b1229b7731e66c4de759a74639c17ef405bba15366885343
pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CC 5640 bytes
font_01_sfnt_off00010610.bin
f18d8fd89eaf0649570eb904ecf35d29e0c6ed98fc1c460bac4d6c3ddd6b8b56
pdf-font-stream PDF embedded font (sfnt) at offset 0x10610 12020 bytes