Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b58bca112f68196…

MALICIOUS

PDF

74.1 KB Created: 2021-03-05 01:02:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2a08a183d7d18e09fa5db665040bfad6 SHA-1: 1e4edac527eabfee815214121f6f95c342dcd641 SHA-256: 0b58bca112f68196897c1643c74f3584774ed912dde9566f2f77a56d086fbd84
154 Risk Score

Malware Insights

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

The PDF document contains numerous external links, a common tactic for link farms and phishing sites, as indicated by the PDF_SEO_LINK_FARM heuristic. The primary external URI, https://gimoguvi.ru/strik, is likely a malicious landing page designed to exploit user curiosity or provide fake support. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8465

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://gimoguvi.ru/strik?utm_term=why+is+my+vtech+phone+saying+no+line PDF link annotation
    • http://setopin.mypressonline.com/dasokiwelonaluj.pdfIn PDF document text
    • http://sawedes.mywebcommunity.org/what_are_the_elements_of_a_valid_contract_in_real_estate.pdfIn PDF document text
    • http://zumewidife.mygamesonline.org/hp_officejet_pro_8615_driver.pdfIn PDF document text
    • http://forajadafogaxuv.medianewsonline.com/we_are_going_on_a_bear_hunt_book_cover.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bovinow.epizy.com/38691951410.pdfIn PDF document text
    • http://fuguzametekobo.myartsonline.com/jawbone_mic_not_working.pdfIn PDF document text
    • http://koxepari.rf.gd/where_can_i_donate_mens_suits_near_me.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/lalolajedosuzoj.pdfIn PDF document text
    • https://s3.amazonaws.com/fadadedezeker/85744283599.pdfIn PDF document text
    • https://s3.amazonaws.com/siwixomudit/28496137504.pdfIn PDF document text
    • http://bozivexaterem.epizy.com/apowermirror_android_4._4.pdfIn PDF document text
    • http://wutopow.epizy.com/xomekenulupumow.pdfIn PDF document text
    • https://4779f2f8-a33e-4327-9c78-21ee0bcf4620.filesusr.com/ugd/31bf02_b259bc3062674fb089c410033f6ecc4f.pdf?index=trueIn PDF document text
    • http://gijifosunusu.epizy.com/15721098408.pdfIn PDF document text
    • https://562c2315-396f-49d1-9e45-1236e049cb13.filesusr.com/ugd/ec0012_924f767995004cf1a0df2bfc2afadfe7.pdf?index=trueIn PDF document text
    • https://55399507-c4df-43aa-88f9-7ea391fc3521.filesusr.com/ugd/a9248e_5b43f17c9b7a4951a1151dfb9d50fbe0.pdf?index=trueIn PDF document text
    • http://nugonubofatu.epizy.com/smart_board_cost_canada.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/bosotomowopebaz.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/gp_m_trong_m_sheet_n_tranh.pdfIn PDF document text
    • http://sazerubewufuzuk.epizy.com/90725096441.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/nusifelojovazefebubi.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/mikidajeno.pdfIn PDF document text
    • https://9eb5ee95-128e-4115-bcd6-d8db8525ce49.filesusr.com/ugd/9904c2_6c99206772fb4bd1bd00881c7be2e004.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/turip/xatozesovobagone.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/aarum_kaanathe_aarum_ariyathe_ringtone.pdfIn PDF document text
    • http://nitumajalu.epizy.com/icloud_bypass_3._0_free.pdfIn PDF document text
    • http://sujetokotew.rf.gd/tawuwurekovoxiwalas.pdfIn 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_off0000f3e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E8 5428 bytes
SHA-256: c36edf2f26276be86366d80dbf5f27b82f95e57f2b3a218b04d718a0922459d1
font_01_sfnt_off00010659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10659 11068 bytes
SHA-256: 10c55031d97c26e7cff236f0746bd2c2251f752edfd1cd1bbb5ba02a2e2a6afb

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