Malicious PDF — malware analysis report

Static analysis result for SHA-256 168ee92bc7d35554…

MALICIOUS

PDF

61.3 KB Created: 2021-02-27 03:55:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 921c31238d1c78032be8613d7234d2f0 SHA-1: 91e34a3b6a67c4440b5390af9d67eae43e9edce5 SHA-256: 168ee92bc7d3555406eeb0ff5a2aa5f15c889bc87e4ca7265254e36497296c9d
212 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9494

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=iso+14001+lead+auditor+training+course+in+india In PDF document text
    • http://noxivivixuza.22web.org/karaoke_another_one_bites_the_dust.pdfIn PDF document text
    • http://julivojurukumu.sportsontheweb.net/como_escribir_un_proyecto_de_investigacion_cientifica.pdfIn PDF document text
    • https://vebexedupatad.weebly.com/uploads/1/3/2/7/132740253/dopalef-subonavazumom-boguk.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/whirlpool_bottom_freezer_refrigerators_reviews.pdfIn PDF document text
    • https://rixukofet.weebly.com/uploads/1/3/4/1/134108779/8282904.pdfIn PDF document text
    • http://viximer.iblogger.org/samsung_j200g_combination_file_free.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/wotifenibodamozexokeku.pdfIn PDF document text
    • http://wivaserana.mywebcommunity.org/plot_structure_of_hamletmachine.pdfIn PDF document text
    • http://wotaxatumumodok.sportsontheweb.net/38330391681.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/que_organos_conforman_el_sistema_circulatorio_del_ser_humano.pdfIn PDF document text
    • https://roribevewo.weebly.com/uploads/1/3/4/5/134502196/23bc2.pdfIn PDF document text
    • https://dajurejew.weebly.com/uploads/1/3/4/7/134753869/5905546.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/acrylic_mirror_sheets_mumbai.pdfIn PDF document text
    • http://ledonapagemes.epizy.com/korefupotusu.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/date_sheet_hpu_ug.pdfIn PDF document text
    • http://kadoxosin.atwebpages.com/how_to_release_psoas_with_ball.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/24919153715.pdfIn PDF document text
    • https://s3.amazonaws.com/bugutaj/how_to_check_a_georgia_drivers_license.pdfIn PDF document text
    • https://s3.amazonaws.com/kulinisokakewi/cover_letter_financial_reporting_analyst.pdfIn PDF document text
    • http://bavuveba.epizy.com/avid_nexis_quick_start_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/ampere_pro_premium_apk.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C5 5328 bytes
SHA-256: 4fc549c2d8579c1dd6066b64a0eb61413480e5a9a7472a090e8be91b1d73923d

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