Malicious PDF — malware analysis report

Static analysis result for SHA-256 33b89760021c5464…

MALICIOUS

PDF

91.9 KB Created: 2020-12-23 23:48:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca06b8bd7a76a3a93d1642b20dd6030d SHA-1: d7f43db45bf2b81e670d23fde3dd92fe866b77b4 SHA-256: 33b89760021c5464f860a5c9146d40aaa450404b7417a538db44665c437e250a
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a site offering Minecraft mods, which is a common lure for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to 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://trafffi.ru/strik?utm_term=car+mod+for+minecraft+ps4+edition
    • https://static.s123-cdn-static.com/uploads/4486969/normal_5fceb11e1bf9b.pdf
    • https://cdn-cms.f-static.net/uploads/4481671/normal_5fd16cde39c90.pdf
    • https://cdn.sqhk.co/nutakurij/RKk1lFy/77168658374.pdf
    • https://cdn-cms.f-static.net/uploads/4387235/normal_5f8f214196aee.pdf
    • https://cdn-cms.f-static.net/uploads/4476122/normal_5fb5689c140ea.pdf
    • https://cdn-cms.f-static.net/uploads/4500432/normal_5fd7f8c6cd5db.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/megodipewukitoj/episode_guide_power_season_6.pdf
    • https://s3.amazonaws.com/mujevubutukoxu/roblox_robux_card_code_generator_no_survey.pdf
    • https://s3.amazonaws.com/megujobemegor/a_thriller_novel.pdf
    • https://s3.amazonaws.com/xedewofuretujo/romeo_and_juliet_quiz_act_3-5.pdf
    • https://s3.amazonaws.com/zinudipir/burnside_high_school_uniform_sale.pdf
    • https://s3.amazonaws.com/rupatojuko/acoustic_guitar_strings_chart.pdf
    • https://s3.amazonaws.com/minaxigevani/anime_girl_thumbs_up.pdf
    • https://s3.amazonaws.com/jagux/17718262959.pdf
    • https://s3.amazonaws.com/resixexi/gta_3_real_mod_apk_obb_download_free_android.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000115a0.bin
c16c38bca9021d39998bca0790faaf6664db8c49cd530e63157806a496f36c69
pdf-font-stream PDF embedded font (sfnt) at offset 0x115A0 5264 bytes
font_01_sfnt_off00012775.bin
f749897da525a9fbc4e578868b66f99b5cb78e77f09b2cb3ffac6e3642a06e54
pdf-font-stream PDF embedded font (sfnt) at offset 0x12775 10984 bytes
font_02_sfnt_off00014d1a.bin
e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848
pdf-font-stream PDF embedded font (sfnt) at offset 0x14D1A 16092 bytes