Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d0539c33d9c2c18…

MALICIOUS

PDF

178.0 KB Created: 2021-02-25 01:46:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58d0fe3380c2b93f34902c77db7849fd SHA-1: 9c535892198b464e8300bc0a826ed275767d24e0 SHA-256: 5d0539c33d9c2c1873cfc46e83071e07096b511f55a47f5387c45dbebf32b57e
104 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to historical maps, likely to entice users to click the malicious link. The presence of external URIs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jottigo.ru/wix?keyword=battle+of+the+bulge+map+1944
    • http://itclick.info/barish_ka_pani_instrumental_ringtone344ng.pdf
    • https://munuteme.weebly.com/uploads/1/3/4/8/134862418/masizorifu-mebozase-pobago-jemodojefizelaf.pdf
    • https://tiseworadew.weebly.com/uploads/1/3/5/3/135317060/9877515.pdf
    • http://wwwbcpzonasegura-viabcp.com/monument_valley_2_level_112xvvo.pdf
    • https://fabuduviwanor.weebly.com/uploads/1/3/4/7/134739750/sudipitasojisi-rezevozes-rurakizo.pdf
    • https://bijariruxo.weebly.com/uploads/1/3/1/3/131382387/5374549.pdf
    • http://blog-millionaire.buzz/70378902863hd0ql.pdf
    • https://vebuxevofarina.weebly.com/uploads/1/3/4/0/134013543/vebajil.pdf
    • http://falorilipeb.mywebcommunity.org/nixebiwajakag.pdf
    • http://axecheat8.xyz/bemizovesowatavabodoponrkrzx.pdf
    • http://zizodoroluxonaf.sportsontheweb.net/south_indian_wedding_vegetarian_food_menu_list.pdf
    • http://grigolia-studio.ru/wujupifezifo3uos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kofaxafogi.myartsonline.com/27052659915.pdf
    • http://porojerosisogu.rf.gd/11621805558.pdf
    • https://s3.amazonaws.com/donukadizolin/sesegezajikulexo.pdf
    • https://s3.amazonaws.com/mixanaz/cabela_s_advanced_angler_battery_charger_manual.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_off00027677.bin
e5aaec04fd0f2026228ecc4aef5ceb936afd5851610afa5474a725823b24ed5d
pdf-font-stream PDF embedded font (sfnt) at offset 0x27677 5524 bytes
font_01_sfnt_off0002892e.bin
e2e27a011d2231a053f1ba9aab8e4ba22b996802cab3e2ab7676b4695baaa833
pdf-font-stream PDF embedded font (sfnt) at offset 0x2892E 15780 bytes