Malicious PDF — malware analysis report

Static analysis result for SHA-256 8faba27f3594a70d…

MALICIOUS

PDF

78.9 KB Created: 2021-03-23 15:24:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d3be3247230bdc1736c03a311457142 SHA-1: bd2cb89ecbc29e9d8b19aa7c15aebc6ee87de362 SHA-256: 8faba27f3594a70dd675cdb72bafc054f6108f33d6bb46e33b32c0030f7daf78
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://maypoin.ru/award?keyword=zimbabwe+affidavit+form+pdf', which is highly suspicious and likely serves as a lure for phishing or to download a secondary payload. The document body is heavily obfuscated, preventing a clear understanding of its direct content, but the overall context strongly suggests 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=zimbabwe+affidavit+form+pdf
    • http://vasakuso.sportsontheweb.net/kegovesureseludusubeli.pdf
    • https://cdn.sqhk.co/xipapotug/tidgds5/flipper_n_dunk_basketball_pinball_machine.pdf
    • https://cdn.sqhk.co/wugolekufo/idPienh/kibagogaj.pdf
    • https://cdn.sqhk.co/nogorodizet/haudAwy/70999904525.pdf
    • https://cdn.sqhk.co/rinulazopun/tibUCmA/does_bucket_list_mean.pdf
    • http://kiritisivasol.mywebcommunity.org/the_rivera_family_cast.pdf
    • https://cdn.sqhk.co/miwurazaz/vgghK7N/fancy_name_generator_free_fire.pdf
    • https://cdn.sqhk.co/sovebiba/ehdGUgi/40727477295.pdf
    • https://cdn.sqhk.co/kitobanifamo/Bqiehcz/motorola_g_power_phone.pdf
    • https://cdn.sqhk.co/vafegijateno/gj1idji/space_decor_dream_home_design_apk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xozeb/59350610843.pdf
    • https://s3.amazonaws.com/navoburarovada/logitech_harmony_hub_setup.pdf
    • https://uploads.strikinglycdn.com/files/c6b09df1-fa25-44d8-b37f-5ea6a82393a3/is_engineering_management_a_good_degree.pdf
    • https://uploads.strikinglycdn.com/files/92cd9a32-15f3-4842-ae30-895c57a26335/that_70s_show_cast_big_rhonda.pdf
    • https://uploads.strikinglycdn.com/files/9720c118-8003-4526-a9f1-55518ff6412c/51716298656.pdf
    • https://uploads.strikinglycdn.com/files/d8b1f756-ca2b-4eb1-9e26-33fb6639c8d5/how_to_make_a_moist.pdf
    • https://uploads.strikinglycdn.com/files/b54b8df5-b059-49fd-b065-efb80e7c10cd/geometry_formulas_circles_tangent.pdf
    • https://s3.amazonaws.com/safago/what_is_the_etiquette_for_wedding_invitations.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_off0000f960.bin
7c910218f97e1a8d3e7dbc2ad470d4ff8fbccbb3328ea68dc0f3d0b397f4df61
pdf-font-stream PDF embedded font (sfnt) at offset 0xF960 5224 bytes
font_01_sfnt_off00010b2b.bin
e0760ab540305d6a4ba56b9cf3d1efca01e578b405fcce064155a88009c81630
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B2B 10192 bytes