Malicious PDF — malware analysis report

Static analysis result for SHA-256 87dd3848e2983617…

MALICIOUS

PDF

82.0 KB Created: 2021-03-20 00:43:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d889673b19d15ebc76e4618b5e68a89 SHA-1: 2561f649767c611318d8161ac342f40fb24269aa SHA-256: 87dd3848e298361778ff21effd67905112e514d2b640afc66e0497a631f53553
96 Risk Score

Malware Insights

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

The file is a PDF that contains numerous URLs, many of which are suspicious and associated with malware distribution. The ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, suggests a lure related to 'Bohemian Rhapsody' to entice users to click on embedded links, likely leading to further malicious content or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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/award?keyword=bohemian+rhapsody+orchestra+pdf
    • http://sakhavto.ru/29638773117cv39i.pdf
    • https://cdn.sqhk.co/tipefimex/ij9jebp/foster_grant_blue_light_glasses_walmart.pdf
    • https://cdn.sqhk.co/tasiteregixo/8ic9OBT/contemplate_my_belly_button.pdf
    • http://wekeb.space/21275250884kqk9m.pdf
    • https://cdn.sqhk.co/jipodipotaj/VYhgiid/70535316123.pdf
    • http://prostochillforum.fun/bertrand_russell_human_knowledge_its_scope_and_limitsrl4c7.pdf
    • https://cdn.sqhk.co/lumolixuwo/gBihZie/vurofuxirifagevogugugus.pdf
    • http://aromaita.space/gidopubalisotubapudejsuz2.pdf
    • http://muldwych.com/75468200827y6kjh.pdf
    • https://cdn.sqhk.co/zumedizojas/eja6dgi/baker_cyst_treatment.pdf
    • https://cdn.sqhk.co/gepabafi/7ggfNia/bus_simulator_indonesia_free_mod_apk.pdf
    • http://mikrotikwizard.com/angles_in_parallel_lines_worksheet_maths4everyonedpdok.pdf
    • https://cdn.sqhk.co/wenewojufaj/jjgrjeK/46371365073.pdf
    • http://spain50off.info/nudos_mentales_bernardo_stamateas_gratish5epv.pdf
    • https://cdn.sqhk.co/woxekivepi/dggieCw/videofx_music_video_maker_apk.pdf
    • http://qrettalq.online/tamopoxideoa4q4.pdf
    • https://cdn.sqhk.co/feripamapuv/msgdLie/monster_evolution_clicker_wiki.pdf
    • http://csxmoney.info/50669919721t26jc.pdf
    • http://remontnatali.ru/wobufowunijatewelasunozodbhdvv.pdf
    • http://1pokypki.website/countable_and_uncountable_nouns_questions_and_answersrvvdm.pdf
    • http://acupofjacob.com/iot_projects_with_arduino_nano_33_ble_sense2j8gi.pdf
    • http://sakepugikunon.mypressonline.com/65811276754.pdf
    • https://cdn.sqhk.co/jadojibam/gNifjLu/clouds_casting_shadows.pdf
    • http://topsale.pro/30987084797nxgvr.pdf
    • http://sodahq.club/ctet_2019_form_correctionzkvkg.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nixomirorubu.myartsonline.com/acca_p4_technical_articles.pdf
    • http://mafonevaverazux.atwebpages.com/25505491483.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_off0000ff63.bin
81ce2917bb6c4ebb97b63aea3948bba5f0680c7511008d6bb68b897418445ec5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF63 5516 bytes
font_01_sfnt_off00011201.bin
a03b06a285a10afeed7c73634899eda9ffaa4243532857e32e9b69af0074ecb0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11201 11824 bytes

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