Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad8254c315a06491…

MALICIOUS

PDF

58.6 KB Created: 2020-11-26 15:39:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91cb7997b43b891622d6ceec1a1c3944 SHA-1: 5d4bd1f4c723f3e55465d64b781362bab47e4644 SHA-256: ad8254c315a06491ffec9b68c2ee96107ae455721e12ebd06d28a46b082f5858
154 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to benign-looking documents, but one prominent URL leads to a suspicious domain. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of the file, likely involving a phishing or credential harvesting attempt via the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffe.ru/aws?utm_term=catastrophism+and+uniformitarianism+pdf
    • https://cdn-cms.f-static.net/uploads/4370062/normal_5f9e05cc66f6e.pdf
    • https://duzikasaropofe.weebly.com/uploads/1/3/4/4/134489835/vunemubidojito.pdf
    • https://fogoravirekan.weebly.com/uploads/1/3/4/3/134335139/gotolisataxarefaso.pdf
    • https://bagubabijotete.weebly.com/uploads/1/3/4/3/134319258/jixogubitorug_saragowojutuj.pdf
    • https://pevinuwipe.weebly.com/uploads/1/3/0/8/130873962/3740324.pdf
    • https://cdn-cms.f-static.net/uploads/4453528/normal_5fa0b25cc03b5.pdf
    • https://cdn-cms.f-static.net/uploads/4374699/normal_5fb4eee60ba4a.pdf
    • https://cdn-cms.f-static.net/uploads/4446507/normal_5fb9e50cc6ff0.pdf
    • https://palobakuk.weebly.com/uploads/1/3/4/5/134523632/rofanopaze.pdf
    • https://cdn-cms.f-static.net/uploads/4446649/normal_5fb4befc665e6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pazifetanegapu/business_partner_configuration_in_sap.pdf
    • https://s3.amazonaws.com/regovadeje/blood_red_skies_painting_guide.pdf
    • https://s3.amazonaws.com/rikolesafuwofar/52089198908.pdf
    • https://s3.amazonaws.com/gapivegek/tovozopipud.pdf
    • https://s3.amazonaws.com/piradi/nirowomigiwejipomaw.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da36.bin
75f338f63d8133c0121c04eed6e15fba542cb404212f04de3852abfda673ac1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA36 5152 bytes

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