Malicious PDF — malware analysis report

Static analysis result for SHA-256 5589e98792f5d3b8…

MALICIOUS

PDF

102.3 KB Created: 2021-03-25 00:18:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8447dbc8d97390690f63818ca2018f07 SHA-1: 7aa6d31d2288ce966683ec36f52258bb2ed369e6 SHA-256: 5589e98792f5d3b8d882a4bd95756221b16697136801cfa009e59ce04e00c1b8
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, flagged as a link farm. The ClamAV detection and ML classifier indicate maliciousness, specifically a phishing trojan. While no scripts were explicitly extracted, the PDF structure and numerous external URLs suggest an attempt to redirect users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8590

Heuristics 4

  • 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-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
  • 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://nipisod.ru/award?keyword=auriculoterapia+para+estresse+pdf
    • https://mifopubulu.weebly.com/uploads/1/3/1/6/131637027/foperulu_manimowav_zuviwafa_roludezad.pdf
    • https://cdn.sqhk.co/bedipidis/dHib2gd/dakofumizanapolelubawuvo.pdf
    • https://baboxubawuxi.weebly.com/uploads/1/3/4/6/134666135/4336095.pdf
    • https://cdn.sqhk.co/lodikorep/ijPzjel/67893246482.pdf
    • http://astropsychology.site/tipos_de_virus_informaticos_caballo_de_troyayj3r6.pdf
    • https://nunesevafarub.weebly.com/uploads/1/3/0/8/130874378/4441998.pdf
    • https://cdn.sqhk.co/zokelofid/XlVsVVp/69279880170.pdf
    • https://cdn.sqhk.co/gawagunikuw/j71diat/force_unmount_external_hard_drive_mac_terminal.pdf
    • http://pro-komp-master.website/gasedifiriresibamajahdtjh.pdf
    • https://cdn.sqhk.co/xewumoxu/cSwjdra/fewikufinijopadopozoxapu.pdf
    • https://zumikifekov.weebly.com/uploads/1/3/0/8/130813997/39a0ae96c9.pdf
    • https://cdn.sqhk.co/julukimesof/qDnghhc/53671104301.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://musovulazapa.epizy.com/28118279317.pdf
    • https://s3.amazonaws.com/nevowimo/3206524196.pdf
    • http://zegokufa.epizy.com/identifying_fractions_worksheets_3rd_grade.pdf
    • https://s3.amazonaws.com/gomaxod/14325126018.pdf
    • http://tikokowekujuw.epizy.com/calories_in_2_taco_bell_cheese_quesadilla.pdf
    • https://s3.amazonaws.com/buwosevax/jixuno.pdf
    • https://s3.amazonaws.com/gaxuremewuger/xedudedoximevefazimolewi.pdf
    • https://s3.amazonaws.com/woxotopapozokev/rowus.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000163ef.bin
ea54d1acff58788dd0ecd5eabd0150be69efe94d6981f64684119589f94e4eb3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x163EF 5140 bytes
font_01_sfnt_off0001757c.bin
b6f02504bb843509c38a8ddf9bc5dde2d1be1ff5d34f5868301009caee0e4610		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1757C 14656 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.