Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf56a41b8abf4a2e…

MALICIOUS

PDF

66.8 KB Created: 2021-03-28 15:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5e214ec87b4106269040902f0e094db SHA-1: 840a8756a1c133dde6cdf66785e74a9a0194a820 SHA-256: cf56a41b8abf4a2e3d8bdff9240b730a06472d5ac0db3e6a9cddae5a8f92d512
154 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating it is part of a link farm, directing users to a suspicious URL. The embedded URL and the ClamAV detection suggest a phishing or malicious content delivery attempt. Although no scripts were explicitly extracted, the PDF structure and the presence of external links point towards a malicious intent to redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8274

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://gimoguvi.ru/award?keyword=dirty+words+in+english+pdf
    • http://jabewes.medianewsonline.com/how_to_make_a_video_with_dog_talking.pdf
    • https://jatevabuxises.weebly.com/uploads/1/3/5/3/135382810/7418596.pdf
    • https://veximukexapi.weebly.com/uploads/1/3/0/9/130969798/9488701.pdf
    • http://kakorezikudu.mypressonline.com/lufitogenaxefoginadafa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/lawakux/ffxiv_fishing_collectibles_guide.pdf
    • http://kojomazudogog.epizy.com/real_anaconda_snake_videos.pdf
    • https://s3.amazonaws.com/jupudizadid/approaching_the_unknown_movie.pdf
    • https://s3.amazonaws.com/jiguwuzobozobaz/dsc_832_reset_master_code.pdf
    • https://47ab6ce1-aee6-4086-a8e7-31fe393d2411.filesusr.com/ugd/afbef4_84a9a02b4f4340eb8ab00765e19454ff.pdf?index=true
    • http://gebawapevala.epizy.com/tasuxosekupex.pdf
    • http://rimatos.epizy.com/rigawufebejukulogufugezet.pdf
    • https://s3.amazonaws.com/regovadeje/71664287751.pdf
    • https://e6343aec-df69-40e7-9959-3c0c55bf73c9.filesusr.com/ugd/6a9017_5c79f47293604a5b8ce4c3966915dd84.pdf?index=true
    • https://s3.amazonaws.com/lomogas/97824587938.pdf
    • http://derutufur.rf.gd/how_much_does_a_commercial_drivers_license_cost_in_nc.pdf
    • https://s3.amazonaws.com/meludav/what_was_the_first_piece_of_labour_relations_legislation.pdf
    • https://s3.amazonaws.com/bopuxosavubare/redagurevusegubilawowara.pdf
    • https://s3.amazonaws.com/sebunuzu/xefitedasoguko.pdf
    • https://459fb65c-52af-4c88-885a-43a44fbeaf25.filesusr.com/ugd/6a7407_246c522f5de7425788bc4d36e8a32b8a.pdf?index=true
    • http://vomematomeze.epizy.com/fuvitidimi.pdf
    • https://98cdd5c5-c43e-49eb-9373-39517e896cbb.filesusr.com/ugd/90661f_2ad504a5005e4708b627688f397a7fb4.pdf?index=true
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8c2.bin
8d9a64f990617b2fca171b4b4105b74991db3970d3ee9d6f36a3f9b402f51f56		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8C2 5288 bytes

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