Malicious PDF — malware analysis report

Static analysis result for SHA-256 a21f33e7e6d97c61…

MALICIOUS

PDF

72.8 KB Created: 2021-02-14 05:51:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a8e376692a0d8b05e4172ce6ba32c34a SHA-1: 103ec35d78ebed5b495ab30dddc27c4d41185b4e SHA-256: a21f33e7e6d97c61f5cee9b576682f4d01d1d36cf94f504fb6292b9b471f0288
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or malware distribution scheme. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to popular media, aiming to trick users into clicking the malicious link.

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://maypoin.ru/wb?keyword=peaky%20blinders%20season%204%20%20movieweb PDF link annotation
    • http://creditactive.info/zoralumapupicakpt.pdfIn PDF document text
    • http://agentsoft.space/alkane_names_1-_20o3e9x.pdfIn PDF document text
    • http://kersita.fun/872134728350gwjn.pdfIn PDF document text
    • http://medyayazilimtr.com/47376569725gmiea.pdfIn PDF document text
    • http://top-shop-store.website/vamesapoz37qa.pdfIn PDF document text
    • http://goodxday.xyz/pokemon_mega_adventure_nds_rom_for_android4dnyz.pdfIn PDF document text
    • http://help-copyrightviolationhelpcenter.com/xatifazus1mxx.pdfIn PDF document text
    • http://boothattendant.com/pokemon_liquid_crystal_full_romwdxbb.pdfIn PDF document text
    • http://goossyy.online/u_pic_a_part_near_mebc0ed.pdfIn PDF document text
    • http://cesaregaspari.com/ps_form_3665g1oco.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/5cp2ifB/how_much_does_amazon_prime_video_cost_monthly.pdfIn PDF document text
    • https://cdn.sqhk.co/nawiwola/jNlpuVf/runekogoju.pdfIn PDF document text
    • http://volosaty100.xyz/nutritional_information_beef_barley_soupho4uo.pdfIn PDF document text
    • http://topplafond.xyz/chrysler_pt_cruiser_service_manual9z1f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/ashampoo_burning_studio_19_full_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/kakejide.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/vetolifazubibibug.pdfIn PDF document text
    • https://s3.amazonaws.com/wemofodi/premiere_pro_photo_slideshow_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rudelazifizuvo/2010_cadillac_cts_wagon_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mipizaju/mann_bawra_song_madhav_mahajan.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/nawaseti.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e000.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE000 5520 bytes
SHA-256: 0a67b2a96a91f56920db7b004edb9b6594019727cae462db0517f4cc387f2a75
font_01_sfnt_off0000f2c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C8 10448 bytes
SHA-256: 0b3dab406dbfa79e662e773e7761bc3866ae6a5e50396772625141a614ced8da

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