Malicious PDF — malware analysis report

Static analysis result for SHA-256 15988b60cbd6baed…

MALICIOUS

PDF

93.5 KB Created: 2021-05-13 01:02:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e8dee681292e0fb626622bd6e7d3d75a SHA-1: 1408d51cbd5070a0828abe9d3bfd86b3007b7cc6 SHA-256: 15988b60cbd6baedcb555a2419d02a4b0f4a90c73c34739b437aa0fee6adf1f8
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 phishing or malware download site. The document body, though heavily corrupted, suggests a lure related to media downloads, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://dugedepap.ru/strik?utm_term=my+little+pony+in+the+sims+descargar+serie
    • http://drenajkrasnodar.ru/9243566028yzbih.pdf
    • http://kusukeluwabe.mywebcommunity.org/pikovo.pdf
    • https://cdn.sqhk.co/fisejadiruw/ubhgfif/26142363820.pdf
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdf
    • http://zamirelerubonex.iblogger.org/angiosperm_and_gymnosperm.pdf
    • https://cdn.sqhk.co/gufulixofoma/nmjj2jg/franklin_and_marshall_football_conference.pdf
    • https://cdn.sqhk.co/lugizumevemu/hjhAoij/46630060139.pdf
    • http://kefets.xyz/alfreds_basic_piano_library_all_in_one_course_book_14q0ak.pdf
    • http://trydouche.xyz/grok_up_the_downstair_answerdfomj.pdf
    • https://cdn.sqhk.co/vuwonesi/jiibxgf/sniper_kill_shot_3d_online.pdf
    • https://cdn.sqhk.co/patagarinixa/Agikjii/handbook_of_valves_and_actuators.pdf
    • https://cdn.sqhk.co/palubavuz/RSfhbVK/confluence_product_documentation_template.pdf
    • https://cdn.sqhk.co/ridasozewe/h7gj6ie/rovojorenabimowuzu.pdf
    • https://cdn.sqhk.co/letiludixo/ahfcih4/meltdown_premium_mod_apk_sniper_3d.pdf
    • http://creamspait.xyz/9565655194bdm79.pdf
    • http://keziwogifivoza.22web.org/wekapavibosubagex.pdf
    • http://erogan-oficial.site/bepakadulisezovefadezybtv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://rodedewezijore.atwebpages.com/govuvuviwaxawof.pdf
    • http://pozujig.epizy.com/nabovaniminarilixiwike.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011bf0.bin
f8fdd0beba4505367bae83b9749206376e9d3c67d071c7527b057bc3d81b229d
pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF0 5380 bytes
font_01_sfnt_off00012e0b.bin
8cd4104cfa3289b963ca5c7b8cc00dc3f965a533122d68d721b3ab6eb6219af0
pdf-font-stream PDF embedded font (sfnt) at offset 0x12E0B 14444 bytes
font_02_sfnt_off0001584f.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x1584F 4324 bytes