Malicious PDF — malware analysis report

Static analysis result for SHA-256 404b6e3d01b1251f…

MALICIOUS

PDF

73.8 KB Created: 2021-03-13 21:57:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86efcd5c0184afc4a6258dedc9905aeb SHA-1: 1c857549b3a1e9c8cac3dc8a758acd2e9978d048 SHA-256: 404b6e3d01b1251ffd0883092379036501deb674cfc8e1b2567d474c12e4e0aa
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL and numerous other suspicious URLs suggest the document is a lure to redirect users to potentially harmful websites. The document body, though partially corrupted, contains text related to 'cute cats coloring sheets', which is likely a pretext to disguise the malicious nature of the link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/123?utm_term=cute+cats+coloring+sheets
    • http://wikurabafewo.iblogger.org/42867936060.pdf
    • http://moscowflowers.shop/how_long_does_it_take_for_priority_mail_to_be_deliveredjojdy.pdf
    • http://winovigamaj.mygamesonline.org/how_to_crochet_a_dog_sweater_with_sleeves.pdf
    • http://leomannapov.com/half_blood_prince_ch_278s73z.pdf
    • https://cdn.sqhk.co/nexetifosam/hu9Mt1m/9455675122.pdf
    • http://50off.pro/despacito_piano_sheet_music_free_download04yja.pdf
    • http://segwaywheelchair.ru/research_methods_in_education_wiersmaov30j.pdf
    • http://top-agent.ru/western_civilization_spielvogel_7th_editionxidmx.pdf
    • http://bimoluk.iblogger.org/blood_bowl_2_halfling_team_build.pdf
    • http://bettyloustintruckbbq.com/callaway_gardens_christmas_lights_reviewsk22ln.pdf
    • http://ziragekezazu.iblogger.org/50515302019.pdf
    • http://world-wildshop.com/how_to_reset_yamaha_rx-v377zny7m.pdf
    • http://vinnipoh.fun/vekobedumiliwobisar4u4hu.pdf
    • https://cdn.sqhk.co/resasenubori/jewlghn/vipofagogosonukakuked.pdf
    • http://xilatotes.sportsontheweb.net/82771579421.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fegoluvarelewum.myartsonline.com/ibps_so_2020_20_notification.pdf
    • http://pejezal.rf.gd/c_i_d_video_hd.pdf
    • http://zekutevig.rf.gd/sanepo.pdf
    • http://ruvowepager.epizy.com/osrs_ardougne_diary_easy_guide.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_off0000e52c.bin
40dc627539a343e8667883ec69bc8b1ed1e29392741120d84068ba6e17337571		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE52C 4968 bytes
font_01_sfnt_off0000f601.bin
0afff653e6b51f825b34cc8c3ed9bec19fcc730cc5d52a524e9cc7367a5e5e6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF601 10716 bytes

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