Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eaf10c732e227f1…

MALICIOUS

PDF

86.2 KB Created: 2021-03-28 04:59:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 77b6c282a2d353d5e2e219533dba2e9e SHA-1: 3024ad3d6a404403202f410f66a64fa4820fe0d7 SHA-256: 1eaf10c732e227f19f8c67844a3c143fc7006bb247903eb783ab4894835d1e23
96 Risk Score

Malware Insights

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

The file is identified as malicious by a ML classifier and ClamAV, with the heuristic PDF_URI indicating an external link. The document body, though heavily obfuscated, contains text related to a job description, suggesting a social engineering lure. The presence of multiple suspicious URLs, including one directly related to the job description lure, indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://leonvi.ru/strik?utm_term=senior+information+technology+specialist+job+description PDF link annotation
    • https://cdn.sqhk.co/jaziwuke/gfNseZa/zovavutusiwe.pdfIn PDF document text
    • http://de-bewertung-id-q2e5t23.top/43362302722ny2pm.pdfIn PDF document text
    • https://cdn.sqhk.co/xibetevoxaj/akhbTYQ/24142494287.pdfIn PDF document text
    • http://hookup753.fun/why_is_my_fridge_not_cool61ol3.pdfIn PDF document text
    • http://reduslim-officialsite.site/5041370261p61sy.pdfIn PDF document text
    • http://airned.ru/roland_barthes_mythologies_the_world_of_wrestlingk1fde.pdfIn PDF document text
    • http://kasyanbeauty.com/how_do_you_cook_ribs_in_a_power_pressure_cooker_xl7uoi7.pdfIn PDF document text
    • http://pet-guru.shop/97464978057thcuh.pdfIn PDF document text
    • https://cdn.sqhk.co/bisuligiga/jg9jhic/95499496193.pdfIn PDF document text
    • http://paxebijevoz.iblogger.org/numil.pdfIn PDF document text
    • http://shoppermarket.online/174072468361bkb7.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/Qih6ie8/choppa_gun_sound.pdfIn PDF document text
    • http://osmosiotzs.fun/19565403720mhyx7.pdfIn PDF document text
    • http://amin-ukraine.net/the_roman_empire_netflix_cast2l4j2.pdfIn PDF document text
    • https://cdn.sqhk.co/dovumisiwe/IVVijhm/sub4sub_pro_hack_apk_download.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/woxotopapozokev/fell_down_the_rabbit_hole_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/gazeta_tema_apk.pdfIn PDF document text
    • http://menufuvaso.rf.gd/duxofejegukir.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/heroes_of_hammerwatch_class_guides.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/canon_t5_manual_video.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/73629739243.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/lanepuniwumagoduwomat.pdfIn PDF document text
    • http://wumujofagitamix.rf.gd/easy_guzheng_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/sakeladibuzi.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/6961170278.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/carnatic_music_book_in_telugu.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_off00010fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD9 5992 bytes
SHA-256: 7abdb6d929cc55a7d3e97030f77c992f88aa7701613374342c4ab068b9e60d11
font_01_sfnt_off0001241a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1241A 11280 bytes
SHA-256: 54cc5cc941222812b8e9b359d074ad5026fdd6f7a10a01e3f533db1dd6d92d22