Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cfb77af2dc88587…

MALICIOUS

PDF

68.2 KB Created: 2020-11-24 02:08:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 31e7e1719fde3cef29e2a76cea6e1c2e SHA-1: 8a300cc2db91c165dea3fac95d2d44e86e15a74b SHA-256: 3cfb77af2dc88587d0faf3b592742ebecb25b7958a5475f347293505f64961a2
154 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, 'https://gettraff.ru/strik?utm_term=dual+wield+warframe', is the primary indicator of malicious intent. While no scripts were extracted, the PDF structure and the malicious URL strongly suggest a phishing or redirection attack, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=dual+wield+warframe In PDF document text
    • https://kofufavok.weebly.com/uploads/1/3/4/3/134313370/dafodi_tezoxafefaj.pdfIn PDF document text
    • https://visenapanelowoj.weebly.com/uploads/1/3/4/5/134581819/zaxokit.pdfIn PDF document text
    • https://vikumeniwexawud.weebly.com/uploads/1/3/0/9/130969440/e6b0da08b38.pdfIn PDF document text
    • https://dibozuvoba.weebly.com/uploads/1/3/4/6/134692955/bawivuma-towiwi-fisifo.pdfIn PDF document text
    • https://bibitoxi.weebly.com/uploads/1/3/4/6/134653780/3edd30bdd4a31f.pdfIn PDF document text
    • https://jagozuru.weebly.com/uploads/1/3/4/3/134360529/milupamepenexa.pdfIn PDF document text
    • https://xoxujodega.weebly.com/uploads/1/3/4/3/134363828/28644d62351b.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/henghuili-files2/zefupuf.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/aviation_mechanic_handbook_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/bagotizotifazad.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/battle_ground_public_schools_school_board.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/77644889803.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/acoustic_guitar_lessons_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/gazitif/ketutekewidumo.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_off0000cf9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9D 4964 bytes
SHA-256: 26141fb5574d04f31b0f979070361c89ae1abaa77c06d1133a802e22ea9af455
font_01_sfnt_off0000e082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE082 10508 bytes
SHA-256: 343fc8d54b0e850bbcc2d7482eaf1bcce9c3e843ce9bd53a89b771a46e383c60

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