Malicious PDF — malware analysis report

Static analysis result for SHA-256 59a4896d45ee323e…

MALICIOUS

PDF

660.9 KB Created: 2021-03-04 01:58:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ed55f27bb91cb3d3d4b92ea39ea42da0 SHA-1: 009d304ffc916b661b000c0e4d4733a871b26f2e SHA-256: 59a4896d45ee323e64fb67118da48bc203686c4167e522b8057967a4bae66aa9
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'bologen.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to book search results, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8357

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://bologen.ru/wb?keyword=pride%20and%20prejudice%20jane%20austen%20book%20online PDF link annotation
    • https://cdn.sqhk.co/towinomer/YAEkfhc/xozobuwakobes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445866/normal_5fd8268aadc45.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478127/normal_602edaa90725d.pdfIn PDF document text
    • http://martakkord.ru/long_john_silvers_menu_with_prices_20204ik2f.pdfIn PDF document text
    • http://tufofol.medianewsonline.com/86797535858.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416299/normal_5fc930d5e9633.pdfIn PDF document text
    • https://cdn.sqhk.co/ferobisuw/cgfd1gg/gujaliwaluteri.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/IMciehi/fibakabakegodorudagurax.pdfIn PDF document text
    • https://cdn.sqhk.co/nepasibuta/7Mhhiaa/80885574803.pdfIn PDF document text
    • http://movoxazukum.22web.org/best_free_anime_streaming_app_android.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369302/normal_601784e9ce11b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rapabilalame.rf.gd/bhangra_music_dj_mix.pdfIn PDF document text
    • http://vajapojaperusu.myartsonline.com/what_is_burger_sauce_made_of_uk.pdfIn PDF document text
    • http://rumavajusugeg.rf.gd/achyutam_keshavam_song_in_female_voice.pdfIn PDF document text
    • http://fetevatakipip.epizy.com/fupabupabujebegamaves.pdfIn PDF document text
    • http://bopevevene.epizy.com/troubleshooting_the_liftmaster_garage_door_opener.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_off000a065d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA065D 5348 bytes
SHA-256: ecf89a2f2a21d444b99fa950d61de7e531cc5e9965b72a37788c0bf0d55a585b
font_01_sfnt_off000a189b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA189B 12544 bytes
SHA-256: 73a59898409bde6b4f13842eda9fc20ad4958cfe098ff8653de2234a93814b2f