Malicious PDF — malware analysis report

Static analysis result for SHA-256 b69a71407713caf2…

MALICIOUS

PDF

76.3 KB Created: 2021-05-17 19:04:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d61e581e7867ee437dd4d79c9013a4d3 SHA-1: b141da04f53615b375b7225bf442bfbd63ed7960 SHA-256: b69a71407713caf2f6f5ef374c5658a3c1a2494c0a04c783d68bff870601ed6d
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high-risk score. It contains an embedded URI pointing to 'ponafet.ru', which is likely a phishing or malware distribution site. The PDF structure and embedded content suggest it's designed to trick users into clicking the malicious link, potentially leading to further compromise.

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/strik?utm_term=introduction+to+mathematics+for+economists+pdf
    • https://gamevuwi.weebly.com/uploads/1/3/4/5/134525912/6015673.pdf
    • http://rent-nout.site/cake_maker_game_appwnwqq.pdf
    • https://zujomesesewega.weebly.com/uploads/1/3/4/9/134902804/60e0bf314e7.pdf
    • http://natlegend.space/super_mario_bros_gameboy_color_emulatorqi9xt.pdf
    • https://cdn-cms.f-static.net/uploads/4472788/normal_605ba5f8b1379.pdf
    • http://lifegirls.site/971829370472iofv.pdf
    • https://cdn-cms.f-static.net/uploads/4453134/normal_60208e36063d2.pdf
    • https://cdn-cms.f-static.net/uploads/4443824/normal_602a82d8c354f.pdf
    • https://cdn-cms.f-static.net/uploads/4445325/normal_60113fa6ec098.pdf
    • https://cdn-cms.f-static.net/uploads/4455390/normal_6027bf334ea0d.pdf
    • https://vujewixijul.weebly.com/uploads/1/3/1/4/131437312/262243.pdf
    • https://static.s123-cdn-static.com/uploads/4527902/normal_5fee3ce25e1d0.pdf
    • https://witaretazijaw.weebly.com/uploads/1/3/0/8/130813730/8059468.pdf
    • https://cdn-cms.f-static.net/uploads/4502493/normal_60115125c5ff8.pdf
    • https://cdn-cms.f-static.net/uploads/4408170/normal_603af66c3d590.pdf
    • http://mybiol.site/champion_wheelybird_2.0_pricek1183.pdf
    • http://axecheat6.xyz/where_to_watch_the_lottery_mega_millionsxlsnd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/61a5f30b-301e-4a02-bcb0-6d566aedf49e/85574930223.pdf
    • https://uploads.strikinglycdn.com/files/8c6b0bd3-4c7d-4ba4-8742-1828f1920606/7836499666.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_off0000ee34.bin
f084ad39993b9d51c34d141eab7b92ed766ef9e444dad5a44af22b979bb7f862
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE34 5300 bytes
font_01_sfnt_off00010009.bin
f280d8cad17fcf9bb5e40477ad94cfa62713303b0b9841877615fec6d6ed76f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x10009 10652 bytes