Malicious PDF — malware analysis report

Static analysis result for SHA-256 beb8c415a5fb18d9…

MALICIOUS

PDF

160.4 KB Created: 2021-01-12 13:09:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 079f3e099753336fff753eaff95dca37 SHA-1: 5f8e8cdcd9eeb988c035f99c5fa0786ea7703079 SHA-256: beb8c415a5fb18d9f186fab62a7fa515e9c9bf796f4efdf8d216e944420dbebe
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous embedded URLs, many of which are hosted on disposable domains or link farms, suggesting a campaign to redirect users to malicious sites. The document body, though heavily obfuscated, contains references to 'lumber tycoon 2 script hack', indicating a lure to attract users interested in game exploits, likely leading to malware download or credential theft.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://trafftec.ru/123?utm_term=lumber+tycoon+2+script+hack PDF link annotation
    • https://site-1204089.mozfiles.com/files/1204089/9499165780.pdfIn PDF document text
    • https://lafowujokunoro.weebly.com/uploads/1/3/0/7/130738997/9457538.pdfIn PDF document text
    • https://wexegupewafux.weebly.com/uploads/1/3/4/4/134443826/tufapulobumi-vodanosoku-pokesebezi.pdfIn PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/720943.pdfIn PDF document text
    • https://site-1233197.mozfiles.com/files/1233197/tecnologa_de_la_informacin_definicin_y_ejemplos.pdfIn PDF document text
    • https://site-1174368.mozfiles.com/files/1174368/sobijad.pdfIn PDF document text
    • https://bidukupe.weebly.com/uploads/1/3/4/3/134348295/6219622.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470521/normal_5fba98833172a.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/ed32395127.pdfIn PDF document text
    • https://repugololenip.weebly.com/uploads/1/3/4/8/134880500/xetalixutifajopupi.pdfIn PDF document text
    • https://site-1227468.mozfiles.com/files/1227468/real_commando_shooting_3d_game_apk.pdfIn PDF document text
    • https://vovinusowoxojik.weebly.com/uploads/1/3/4/3/134349833/tigajuwowalulivevu.pdfIn PDF document text
    • https://bisigategisabuv.weebly.com/uploads/1/3/4/8/134884720/jikofiva_rukasexofevip_tenonorof_refodaku.pdfIn PDF document text
    • https://xovigojimere.weebly.com/uploads/1/3/4/8/134854331/vavokofefomilinib.pdfIn PDF document text
    • https://site-1168102.mozfiles.com/files/1168102/78026894162.pdfIn PDF document text
    • https://site-1173985.mozfiles.com/files/1173985/restaurant_story_best_recipes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002239d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2239D 5404 bytes
SHA-256: cbcdbb8350f6a8601a983cc3b59ec0b25f919a53525ef6ddf6d81940fafd061d
font_01_sfnt_off000235d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x235D3 18484 bytes
SHA-256: c3bb823188e00b5d0eaebeae045b98ef3cbbe3635a9283a0eeea9945517e8a41
font_02_sfnt_off0002661d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2661D 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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