Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fa1dcca0f55607d…

MALICIOUS

PDF

74.7 KB Created: 2021-03-17 09:46:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: aeb062706b3b65aecd631873a22efc3b SHA-1: 4ebc51b48b04463e5cd04d2bfb7ab3110facbd9d SHA-256: 2fa1dcca0f55607db8ff7d2f37df937e3494d8d9edd67c3019cf07acaa520187
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely intended for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest it's designed to exploit users by directing them to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://jumiwimov.ru/strik?utm_term=how+to+make+sonic+breakfast+burritos
    • https://cdn-cms.f-static.net/uploads/4467298/normal_5fea458cb8691.pdf
    • https://cdn-cms.f-static.net/uploads/4366625/normal_6036fcaecf9d0.pdf
    • http://gikiwasixe.66ghz.com/55546742767.pdf
    • https://static.s123-cdn-static.com/uploads/4459628/normal_5fcc5de8c9949.pdf
    • http://hotsales-com.xyz/amazon_alexa_app_iconxhfri.pdf
    • https://cdn-cms.f-static.net/uploads/4366313/normal_602fb49380d4c.pdf
    • https://static.s123-cdn-static.com/uploads/4499995/normal_5fc8347e181d0.pdf
    • https://cdn-cms.f-static.net/uploads/4383699/normal_5fd61fabd813b.pdf
    • https://static.s123-cdn-static.com/uploads/4501774/normal_6007d758ccfe9.pdf
    • http://dfahsdfgjsfg.online/how_to_make_watermelon_wine_at_homeflhd5.pdf
    • http://garant-ritual.online/coesia_annual_report_2017se69h.pdf
    • http://tehnotop.space/rimojazejaripe88spk.pdf
    • http://czecheducation.space/778565247148r8t2.pdf
    • https://cdn-cms.f-static.net/uploads/4365546/normal_6015ccad770b5.pdf
    • http://hdvideo.design/67887194910k146j.pdf
    • https://cdn-cms.f-static.net/uploads/4389387/normal_600d45f10dcd6.pdf
    • http://pihodze.com/xerox_7845_waste_toner_replacements0wv1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jejemizon.rf.gd/sig_sauer_pro_2022_review.pdf
    • http://sapofikij.epizy.com/desuvafisuzubofewe.pdf
    • http://zorijefugixor.atwebpages.com/54586934446.pdf
    • http://nedafab.rf.gd/fluval_a446_307_performance_canister_filter.pdf
    • http://kopolug.myartsonline.com/fukasevevisujetigorimol.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2ea.bin
518185a618b90838aa124045cf76f3e0ffdc9a9a8a7b88201c2125786e4cd607
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EA 5252 bytes
font_01_sfnt_off0000f4c0.bin
36da25eab811c760a20117dbf72302ae3de456364b87826caa0d03366a25266b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C0 12080 bytes