Malicious PDF — malware analysis report

Static analysis result for SHA-256 0894b9ddbdd8755e…

MALICIOUS

PDF

61.3 KB Created: 2021-03-10 06:02:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: fcbe8ec5e404dbcf6d26768a806837a6 SHA-1: 77b83ffff28ed3a3dd8d9617bb2fda9ee2d0215e SHA-256: 0894b9ddbdd8755e263bb7395223dfe3f4e910bc130dce6cf7d76f2e0c6fd0e1
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5201

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/award?keyword=como+hacer+un+analisis+financiero+pdf PDF link annotation
    • http://straponartist.com/the_facebook_sonnetbw855.pdfIn PDF document text
    • https://fitinunajixir.weebly.com/uploads/1/3/1/6/131637477/nosufafusamujos.pdfIn PDF document text
    • https://gumarifubora.weebly.com/uploads/1/3/4/4/134465571/zupovilukil.pdfIn PDF document text
    • http://winokuzovew.iblogger.org/cambiar_ip_y_mac_android.pdfIn PDF document text
    • https://pujawemufupu.weebly.com/uploads/1/3/2/6/132680931/684330.pdfIn PDF document text
    • http://topstop.site/falodu70dsa.pdfIn PDF document text
    • https://kubududowu.weebly.com/uploads/1/3/5/3/135349078/9c1c3f1df2f67.pdfIn PDF document text
    • https://dudobafileziv.weebly.com/uploads/1/3/5/3/135331993/tewikexajimel-gaxupisegew-gifeto.pdfIn PDF document text
    • http://hookup753.fun/how_to_write_a_letter_to_a_deployed_soldier7oxdg.pdfIn PDF document text
    • http://com-copyrighit.com/bearers_of_the_black_staffrcy4j.pdfIn PDF document text
    • https://badevejolaf.weebly.com/uploads/1/3/4/8/134867981/lowawelede_menebebu_figuwuxadafa.pdfIn PDF document text
    • http://songkfrk.site/from_the_mixed_up_files_of_mrs_basil_chapter_4_summary1qqq6.pdfIn PDF document text
    • https://retetozatinum.weebly.com/uploads/1/3/0/7/130775023/vagiremixuvak.pdfIn PDF document text
    • https://bikaxumipot.weebly.com/uploads/1/3/1/6/131637137/6058595.pdfIn PDF document text
    • https://duvozogol.weebly.com/uploads/1/3/5/3/135314926/594b510427ac.pdfIn PDF document text
    • http://nazawate.iblogger.org/aganaga_latest_songs.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bozalusi.epizy.com/10th_class_pak_study_book_in_urdu.pdfIn PDF document text
    • http://vagakidid.epizy.com/konasor.pdfIn PDF document text
    • http://zonadomafi.rf.gd/54393090394.pdfIn PDF document text
    • http://bajipenu.epizy.com/jagixulilog.pdfIn PDF document text
    • http://rixufesivefole.rf.gd/what_does_faulty_coordination_mean.pdfIn PDF document text
    • http://zigubogujivo.epizy.com/captive_minecraft_5.pdfIn PDF document text
    • http://pogadimubafixi.rf.gd/61470657939.pdfIn PDF document text
    • http://dadosekim.epizy.com/buvejiz.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/zavamedubunisosemupivibo.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/50179422913.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/vlookup_hlookup_pivot_table.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_off0000e5b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B7 5300 bytes
SHA-256: bbc469329ec9e1a816afd89d505217b7abdd401ec63f0ae81fad3fdd68db68fd

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