Malicious PDF — malware analysis report

Static analysis result for SHA-256 8876e47c497c27e5…

MALICIOUS

PDF

70.7 KB Created: 2021-05-10 15:28:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d08ec153ba484b47dd9e11f5cae2361 SHA-1: 53131f99b93802025e7ebc346bcc588afc2072db SHA-256: 8876e47c497c27e5ca915b6b997ff9b734f3fa36e1f689253e88f1f51f411694
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious website. The document body, though heavily obfuscated, appears to reference 'Tissot 1853 chronograph manual', suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://gimoguvi.ru/strik?utm_term=tissot+1853+chronograph+manual
    • https://juwujumatel.weebly.com/uploads/1/3/4/0/134042908/bofezopojaworuxume.pdf
    • https://cdn.sqhk.co/xuteposidobi/haJ0lps/lezisaganilabutakobit.pdf
    • http://tavalidoxifur.22web.org/navy_correspondence_thank_you_letter.pdf
    • http://lekiduzixixawuj.22web.org/club_car_parts_manual_free_download.pdf
    • http://yoga-fitness.space/blockchain_bubble_or_revolutionn67pg.pdf
    • https://safamitiwifiro.weebly.com/uploads/1/3/0/7/130739579/861e7629725.pdf
    • http://kindraretterath.com/latilubegotifevudf208q.pdf
    • https://fosubenasodu.weebly.com/uploads/1/3/4/0/134097760/9029afdeda02.pdf
    • http://dovamemowiruz.iblogger.org/21467651980.pdf
    • https://cdn.sqhk.co/joremeve/ihjaNgg/pivunajevavol.pdf
    • https://cdn.sqhk.co/fudikeraz/jdHOQ3d/bajomus.pdf
    • https://cdn.sqhk.co/vaxarogajib/tgihaje/losizi.pdf
    • http://usesucre.pro/620169590197zntk.pdf
    • https://nosuzodudoj.weebly.com/uploads/1/3/4/5/134588086/xutafavata.pdf
    • https://remitibomuko.weebly.com/uploads/1/3/4/8/134853657/visokulerizuma.pdf
    • https://cdn.sqhk.co/luxanimev/IBQgiic/tukijitoweludegaf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://suwuxuk.epizy.com/35804553386.pdf
    • http://xenavak.rf.gd/what_generation_is_my_kindle_fire_d025.pdf
    • http://newotev.rf.gd/ati_radeon_hd_5870_driver_free.pdf
    • http://dujawupiraxep.rf.gd/text_structure_flocabulary_answer_key.pdf
    • http://depimakari.epizy.com/laboratory_apparatuses_and_their_uses.pdf
    • http://disoked.epizy.com/dawoodi_bohra_marsiya_in_english.pdf
    • http://vamuxusonepuf.rf.gd/25852170108.pdf
    • http://mujigakevomo.epizy.com/agammaglobulinemia_pediatria.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_off0000d744.bin
39670a1d256b84499912e2755a8d7d8ec00cf637534e9c46cfe3524388204114
pdf-font-stream PDF embedded font (sfnt) at offset 0xD744 5828 bytes
font_01_sfnt_off0000eaf8.bin
2e8d3824e4e125b134f8e00fb8abcfbd81f58f221eeab507c5afe5ca10260c5b
pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF8 10100 bytes