Malicious PDF — malware analysis report

Static analysis result for SHA-256 4061ecb64ea96b22…

MALICIOUS

PDF

93.2 KB Created: 2021-03-22 21:54:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e905fa7432098fd2b54c74cceef5ad71 SHA-1: 50b4e1146fabfd51ed5e8c07cfdb906f007f9377 SHA-256: 4061ecb64ea96b2209afacaee3ddac56c61d10017b941cd104934f00550ba179
96 Risk Score

Malware Insights

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

The PDF contains multiple embedded URIs, with the highest priority pointing to 'https://botokaw.ru/award?keyword=centrifugal+pump+principle+pdf'. This URL, along with others, suggests a phishing or credential harvesting attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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://botokaw.ru/award?keyword=centrifugal+pump+principle+pdf
    • http://vixesun.iblogger.org/fuwejixezor.pdf
    • http://mnogolidov.xyz/gizobarosimekegoxodon73n96.pdf
    • https://static.s123-cdn-static.com/uploads/4460247/normal_5ff2d6b0b2029.pdf
    • http://zapapoberok.iblogger.org/gerekomam.pdf
    • https://cdn.sqhk.co/fekesolip/jsOgePk/vampires_diaries_netflix_france.pdf
    • http://helps-lnstagramcopyrights-about.com/how_to_work_out_currency_conversion_in_excelhvc9l.pdf
    • https://cdn.sqhk.co/nijalemivowo/acKWgci/ravizusadidemebum.pdf
    • https://cdn.sqhk.co/sexuzoropa/iftl9ih/furarapujimoloxojaz.pdf
    • https://cdn.sqhk.co/binuwaxe/uidGr0h/guwexepupikajobilitijorif.pdf
    • http://koolmaxt.online/611243463135650f.pdf
    • https://cdn-cms.f-static.net/uploads/4449987/normal_6009f5454a8ab.pdf
    • https://cdn-cms.f-static.net/uploads/4444377/normal_6021a80a827b5.pdf
    • http://instgramcopyrightdispute.com/motufaretevujewomivadwr1ll.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tejajageduvutu.epizy.com/macbeth_act_2_scene_3_translation.pdf
    • http://dojovosis.rf.gd/2016_nissan_sentra_check_engine_light_reset.pdf
    • https://6bfd3344-23d3-4e03-ab7d-00c1c23eecf6.filesusr.com/ugd/be19e1_cfc0a0cbc5a94f7192a61505946ff9c3.pdf?index=true
    • https://8f0c9b82-9570-4081-bbb7-5e23a534ea09.filesusr.com/ugd/7008f3_60c2cbb6828f43639e0f2013877c3f2c.pdf?index=true
    • https://9d76d0c6-5807-43ac-a2ba-7b4112d1a20a.filesusr.com/ugd/5cd33b_7ea9e51500e4480eb6863b11c4b04e9d.pdf?index=true
    • http://velumosak.epizy.com/renepowazagaxafo.pdf
    • http://vitorozakosi.rf.gd/62817930632.pdf
    • https://e9abb47e-19e5-4ec2-9f3c-2aa4e6f2bf0a.filesusr.com/ugd/92be99_f0004a4f96b54f09944c1c9709749853.pdf?index=true
    • https://8c56b32b-3398-45d6-9c0b-b55146621f16.filesusr.com/ugd/6924eb_0cb0018babcf4299857af30e21c92c36.pdf?index=true
    • http://fulisawuxulinis.rf.gd/gattu_battu_music_video.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_off00012b6b.bin
d7edc28107a1c4bcd48eeec565dad5a6d6abe177b416c5be9b1916c8d062ba39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B6B 5204 bytes
font_01_sfnt_off00013d05.bin
9546627ff6d16015a0ae917e6ebc6a08a1863bee2364f9f806c9471069d3aa23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13D05 12584 bytes

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