Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e32b3e49e106b45…

MALICIOUS

PDF

74.7 KB Created: 2020-11-17 00:43:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 23415c42c7f24d4d07523acb63948cb6 SHA-1: dd2907d07e699e897e8287c5cc1b82ac2b417396 SHA-256: 4e32b3e49e106b45b5b03e2e130e6db5c68eda1547e9a45c11d9a99458b73a4f
156 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://trafffe.ru/strik?utm_term=the+heart+of+betrayal+pdf+free+downl PDF link annotation
    • https://xomevore.weebly.com/uploads/1/3/4/3/134346529/takitowepodu.pdfIn PDF document text
    • https://vakesefujes.weebly.com/uploads/1/3/0/7/130739027/81c73e5f2df.pdfIn PDF document text
    • https://ruparowix.weebly.com/uploads/1/3/4/3/134350000/f4ec5e12c9dada.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/winin.pdfIn PDF document text
    • https://tenasusuboziwid.weebly.com/uploads/1/3/4/3/134349012/eeea78a289a023f.pdfIn PDF document text
    • https://vorujefam.weebly.com/uploads/1/3/4/3/134322124/a753615.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/wusigipufuvowix/descent_into_avernus_online.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/bhojpuri_naye_gane_video_mein.pdfIn PDF document text
    • https://s3.amazonaws.com/wexoteluwag/idaho_gun_show_loophole.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/lelexumikizizudoj.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/champcash_app_install.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/social_network_movie_script.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/xanurefajameritulizomabeb.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off0000e80b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE80B 5236 bytes
SHA-256: 9ccb262ae1cc83bc142d3c661860a8dd98cac85f18e0f2844ca0cfbfc2420968
font_01_sfnt_off0000f9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E5 10628 bytes
SHA-256: 9fbf5a47a1933b3ae8e73b8fb2bfb95fa8ec1a68c8c89df9f86da243ae23d4d8

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