Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2281325fe9cc074…

MALICIOUS

PDF

75.8 KB Created: 2021-03-16 22:16:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6de427df4b562a19d6bf8dd6660c1cf6 SHA-1: d13ddc660a8716112fb828120f8115097529cc82 SHA-256: d2281325fe9cc0745a90356e5ed61f852e2f9b627f68adf74129fd56679a3b95
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, 'maypoin.ru', which is likely used to host a malicious payload or phishing content. The document body is heavily obfuscated, preventing a clear understanding of its immediate user-facing content, but the presence of the external URI and the malware detection strongly suggest a phishing or malware delivery attempt.

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://maypoin.ru/award?keyword=biblia+catolica+pdf+antiguo+testamento
    • https://cdn.sqhk.co/jisaside/iicigeY/mindshare_ceo_prank.pdf
    • https://cdn.sqhk.co/waxobakal/gKbOJjv/46617912987.pdf
    • https://static.s123-cdn-static.com/uploads/4424666/normal_6003c04226290.pdf
    • https://cdn.sqhk.co/wekaradukuve/fhhgeib/red_ball_garage_cannonball.pdf
    • https://cdn-cms.f-static.net/uploads/4467589/normal_600bd823c12d8.pdf
    • https://cdn.sqhk.co/ledazukogim/gJiimia/mejamatasesomutogigo.pdf
    • https://cdn.sqhk.co/gigepiwej/Kifgdjf/bike_tracks_near_mernda.pdf
    • http://piroxopirov.22web.org/holy_rosary_guide_thursday.pdf
    • https://cdn.sqhk.co/jokalirubore/jgbNjid/76231398475.pdf
    • https://cdn.sqhk.co/lewoxiguj/icsQia7/amazeballs_3d_shortcut_run_block_puzzle_game.pdf
    • https://cdn.sqhk.co/detatakev/jcaR9Vh/racing_club_argentina_shop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nuloporime.rf.gd/death_cure_movie.pdf
    • https://uploads.strikinglycdn.com/files/b89beb1b-7c83-432a-a356-26b46e5f8c9c/where_is_the_reset_button_on_my_bryant_furnace.pdf
    • http://lovamavip.epizy.com/dakej.pdf
    • http://vogidide.epizy.com/48042164153.pdf
    • http://darewuxopasog.rf.gd/kajinag.pdf
    • https://uploads.strikinglycdn.com/files/5e18d17f-4ab2-4394-b423-6fc5e283d3cf/64982956533.pdf
    • http://xitirinajeki.epizy.com/writing_and_solving_algebraic_equations.pdf
    • https://uploads.strikinglycdn.com/files/1dfe408b-43ad-4ffd-b1ee-fa3d0ff7e692/paxujaneva.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_off0000e8c4.bin
f7f313a44168bc0cd593bd2181f83026a6e52fa2a7493953f7a2a6cec154cb5d
pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C4 5568 bytes
font_01_sfnt_off0000fba8.bin
087923d8c15a97c204cf3b3b9c9d75eb0dc9260b422756631fb98f112d11cac8
pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA8 11428 bytes