Malicious PDF — malware analysis report

Static analysis result for SHA-256 619d642651710fb3…

MALICIOUS

PDF

74.8 KB Created: 2021-03-09 10:21:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4391b5172371b6fa44fa5e8175087b5 SHA-1: 9c8347451128d5ae05e8a3fecbcf96299f25343d SHA-256: 619d642651710fb32e156bf54f41cd9a6c6499b78791ab5f5245e70532b7a264
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious payload or phishing page. The document body, though heavily obfuscated, suggests a lure related to 'free sheet music' to entice users to click the embedded link.

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://xezojetit.ru/123?utm_term=pleyel+violin+duets+free+sheet+music
    • http://legalvictory.group/zelopanivojuvelaxerazadisr33gt.pdf
    • http://shop-profildoors.ru/zononie078o.pdf
    • http://tehnoprom.org/biology_cell_structure_and_function_study_guide2p6el.pdf
    • https://cdn.sqhk.co/wifopuzuxiba/jagda6C/tumblr_wallpaper_pink_pastel_aesthetic.pdf
    • https://kapejipe.weebly.com/uploads/1/3/1/0/131070538/1782965.pdf
    • http://lovupijuti.getenjoyment.net/sistema_binario_octal_y_hexadecimal.pdf
    • http://savupubib.22web.org/does_my_tv_have_optical_output.pdf
    • https://duzareledibasa.weebly.com/uploads/1/3/4/8/134890493/5828268.pdf
    • https://cdn.sqhk.co/vabolepibe/hdzfTV1/mulimuwemanapozebilive.pdf
    • https://pumoguviponurin.weebly.com/uploads/1/3/4/7/134773216/zopexexefinofiwo.pdf
    • https://pawizujepus.weebly.com/uploads/1/3/1/6/131637171/c20b9a065.pdf
    • http://matras-24.ru/73561428484cgcaa.pdf
    • http://pefujogori.iblogger.org/samsung_galaxy_note_4_price_philippines_2020.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/36d405a7-e27f-4f26-ae18-ee1a9551c9d8/23691651065.pdf
    • http://nosigegu.onlinewebshop.net/1793567087.pdf
    • https://uploads.strikinglycdn.com/files/c8b4e11d-2768-4fbb-a01e-9a8cf12c7d8e/what_is_the_best_bottom_load_water_cooler.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_off0000e4ff.bin
9c21a679cb8f2f56251d0b726d57306fae3ba5c588254c2deaed324c0e84a4f5
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4FF 5216 bytes
font_01_sfnt_off0000f6a2.bin
1ecd274365a0d6bc2bcb794168a6780f5a51147dbdd5367287dbfe4c2f5218a6
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6A2 11920 bytes