Malicious PDF — malware analysis report

Static analysis result for SHA-256 908f14f386d064bf…

MALICIOUS

PDF

78.5 KB Created: 2021-03-20 13:52:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 07d510be3259e4056f733b6ab828cfc6 SHA-1: 65548b9c4f99022e8c9ee385309367117c145c3d SHA-256: 908f14f386d064bfee6c0ba1d1690049df1c2e0444c4aacc67169b3662cff713
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, indicating a high likelihood of malicious intent. The PDF contains embedded URLs that point to external resources, suggesting it's designed to redirect users to potentially harmful websites. The presence of these URLs and the overall detection by security tools strongly suggest a phishing or malware distribution 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=tone+mood+technique+and+purpose+of+the+author+pdf
    • https://budasanufewe.weebly.com/uploads/1/3/5/3/135323580/5140c6.pdf
    • http://kazotapojiwi.mywebcommunity.org/29551596195.pdf
    • https://sadusanolomu.weebly.com/uploads/1/3/4/6/134646393/8ee69f0b50ae0a.pdf
    • https://cdn.sqhk.co/dofexoxev/zidZIQa/96611321467.pdf
    • http://korixoludofuguk.scienceontheweb.net/o_processo_de_aprendizagem_motora.pdf
    • http://kuzexamipapoxip.medianewsonline.com/what_does_character_mean_in_the_bible.pdf
    • https://cdn.sqhk.co/murerezusa/egf3gcw/ark_survival_evolved_xbox_one_cheats_wyvern.pdf
    • https://cdn.sqhk.co/kazakilen/gjgbxge/doge_meme_dance_sound_button.pdf
    • https://kevosenebiv.weebly.com/uploads/1/3/1/8/131871602/pesedevavosed.pdf
    • https://zurejekivob.weebly.com/uploads/1/3/0/8/130813755/3458a1970.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://safodur.epizy.com/whatsapp_free_for_android_new_version.pdf
    • http://rudutotisexanib.rf.gd/37844587588.pdf
    • http://mubozezubudiz.rf.gd/givezeloselotax.pdf
    • https://uploads.strikinglycdn.com/files/e6c46112-0da3-4cec-80d4-399a279b8a33/fegetoru.pdf
    • https://uploads.strikinglycdn.com/files/d977c16a-3867-4c85-b61c-51b178eaf6a7/how_did_the_triple_entente_win_ww1.pdf
    • https://uploads.strikinglycdn.com/files/3ba9d963-2d02-43ae-8c4c-8b9386df1875/how_to_install_hampton_bay_3_light_track_kit.pdf
    • http://dusilasazeli.rf.gd/46090420790.pdf
    • http://fojobalize.rf.gd/best_coffee_maker_with_grinder_wirecutter.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_off0000f314.bin
40b575eca081546ad8cf23c33701901c84b814682242eada719407004d7ebaf3
pdf-font-stream PDF embedded font (sfnt) at offset 0xF314 5440 bytes
font_01_sfnt_off0001055e.bin
4758f50df2eaf5793ef58d68e7c293f6d4f740dabd72c565744201b3ded65dfd
pdf-font-stream PDF embedded font (sfnt) at offset 0x1055E 10936 bytes