Malicious PDF — malware analysis report

Static analysis result for SHA-256 06690935960d2e02…

MALICIOUS

PDF

76.6 KB Created: 2021-03-23 19:48:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dc9949c15b66ea6f13a4cb2b68054faa SHA-1: 72ee75fdb1a87aee783d81b96f06e9e015169778 SHA-256: 06690935960d2e02e55fef3f183bf1a88c51a93f94f9c139ac06a5e42b29213c
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, pointing to various PDF files hosted on Weebly and other domains. The primary URL, 'https://lozipotod.ru/award?keyword=boy+meets+girl+pdf', suggests a lure to engage users with potentially irrelevant content to mask malicious activity. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution through the linked documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/award?keyword=boy+meets+girl+pdf
    • https://mefirotevi.weebly.com/uploads/1/3/5/3/135314773/gepomenex.pdf
    • https://panalito.weebly.com/uploads/1/3/2/6/132695280/8778118.pdf
    • https://rixagaxovexi.weebly.com/uploads/1/3/4/0/134000332/vivisafogirim.pdf
    • https://juwexulomo.weebly.com/uploads/1/3/4/3/134385858/fodav.pdf
    • https://gifivetusox.weebly.com/uploads/1/3/4/7/134736849/5340554.pdf
    • http://naturka.space/who_to_call_for_dishwasher_repairftusz.pdf
    • http://itclick.info/tovalikowizesyfbe.pdf
    • http://simultaneously.space/read_the_iliad_online8ljg9.pdf
    • http://bigmagazin.xyz/scottish_rite_ritual_monitor_and_guidedu5fo.pdf
    • https://porukugo.weebly.com/uploads/1/3/1/3/131380087/b5f79dfb695.pdf
    • https://gurovepulebeguj.weebly.com/uploads/1/3/1/1/131163897/raluteduvepule_rufexefinugama.pdf
    • http://leadtop.co/baweszda4n.pdf
    • https://vunorozixu.weebly.com/uploads/1/3/1/1/131163876/kerasodoxusi-fugeravubisol-deviginusologu-zeduvoregumin.pdf
    • https://gekubunog.weebly.com/uploads/1/3/4/2/134235395/f1262.pdf
    • https://wukelefitifaka.weebly.com/uploads/1/3/4/8/134882985/d6a22.pdf
    • https://zazoveju.weebly.com/uploads/1/3/1/4/131407355/3046942.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jowutoneranemuk/authentic_assessment_definition.pdf
    • https://s3.amazonaws.com/webipejonavuv/how_to_fix_a_waring_pro_waffle_maker.pdf
    • https://s3.amazonaws.com/mupukesunobaga/33818569073.pdf
    • https://s3.amazonaws.com/legipalofi/basic_makeup_brush_guide.pdf
    • https://s3.amazonaws.com/viromibukoleliw/why_won_t_my_apple_music_app.pdf
    • https://s3.amazonaws.com/wekibik/biblia_de_estudio_macarthur_descargar_gratis.pdf
    • https://s3.amazonaws.com/zalisujezajaje/gaxidulogujomarere.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_off0000f071.bin
44a3f9f34c4923333da386fe8972d44c6c97264943645d21d403e9930defbd18		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF071 5300 bytes
font_01_sfnt_off00010275.bin
da93f02a8aeebbd8bb8bb12bba5766042e0cc9690047bb5278aa77b70baef5aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10275 10264 bytes

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