Malicious PDF — malware analysis report

Static analysis result for SHA-256 25e4598c9d549189…

MALICIOUS

PDF

78.8 KB Created: 2021-03-26 07:36:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1ea90cf62ed13dd88bc187f9c733754a SHA-1: 728a8e06ac08df755d3fd074c6c3882d1111b78e SHA-256: 25e4598c9d549189e0544416e9950f50f4c60897e2f6f104e81d242baf730bb1
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely for phishing or malware distribution. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, appears to contain product-related keywords, suggesting a lure to trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://seumenha.ru/strik?utm_term=loa+logitech+x100+v%25C3%25A0+x500
    • http://prizyivnik.ru/332999455487fqnr.pdf
    • http://lollipopa.online/3151861004269gy.pdf
    • http://3bki.ru/how_to_start_briggs_and_stratton_power_washerkfdbv.pdf
    • http://naturalik.fun/bogopivygas.pdf
    • http://feldhaus-klinker-plitka.ru/fakokodegowejonufugalusd00mc.pdf
    • http://energierecrute-emplois.com/how_to_set_up_myzone1ptnl.pdf
    • http://petersikdar.com/the_invisible_man_hg_wells_quotestp031.pdf
    • http://kind-insta.site/how_to_pair_ps3_controller_to_fire_tv_stickr19fc.pdf
    • http://forecast.bet/pisosowobu525td.pdf
    • http://purpless.vip/mimeza5212x.pdf
    • http://converstarget.ru/sheetz_carrolltown_pennsylvania4m31y.pdf
    • http://devgame.design/822475834700bap1.pdf
    • http://reliables.ru/42464022893pkqvv.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/jufowokedunod/4847878347.pdf
    • https://uploads.strikinglycdn.com/files/f4fd3187-e915-49f2-b0f8-03b41807be6c/what_happened_to_king_in_seven_deadly_sins.pdf
    • https://uploads.strikinglycdn.com/files/c4595048-457c-4d63-b0db-04d81f417ce6/susan_sontag_against_interpretation_summary.pdf
    • https://s3.amazonaws.com/zisulamisozoto/xidemil.pdf
    • https://uploads.strikinglycdn.com/files/d6202099-a34e-47a6-b01f-5db04b4eecf2/when_do_you_use_i_am_or_im.pdf
    • https://uploads.strikinglycdn.com/files/431a4085-5a0c-455d-8854-746c00340d48/adobe_photoshop_cs3_basic_tutorial.pdf
    • https://s3.amazonaws.com/vonuxagupeduze/bolajuvuzodozure.pdf
    • https://s3.amazonaws.com/vaxebisapesi/ccloud_tv_apk.pdf
    • https://uploads.strikinglycdn.com/files/daef11c1-a588-47e9-bc1a-b982a34f1e40/how_to_clean_a_krups_coffee_maker.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_off0000df8d.bin
1e3fcc53359bcd69d7406da3f47a54f50c4937a38eee25928d02754b3868381a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8D 5092 bytes
font_01_sfnt_off0000f071.bin
ef6ac3c5091e04da3419313b80faca246eaf5963800a33fd9ce7e2ed60e3b7c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF071 21088 bytes
font_02_sfnt_off00011de2.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE2 4324 bytes

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