Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5bb5c6d5584a98f…

MALICIOUS

PDF

61.1 KB Created: 2020-12-22 20:18:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 57a722d7b3591b30aede7103a965a7c0 SHA-1: 13a90275afb9f0f9526435a496b49d0e61bc9bc6 SHA-256: c5bb5c6d5584a98f734d1a8b6063aa6569d58c769fa020da6daef2f499ab8ebe
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded links, many pointing to disposable domains, and one URL includes a 'utm_term' parameter suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, contains references to 'full movie site name' and authoring application details, indicating a lure to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8124

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://trafficel.ru/aws?utm_term=full+movie++site+name PDF link annotation
    • https://rapokivagifo.weebly.com/uploads/1/3/4/3/134338569/7316632.pdfIn PDF document text
    • https://domuvajedoxu.weebly.com/uploads/1/3/4/8/134847007/girimamu.pdfIn PDF document text
    • https://jibokogemi.weebly.com/uploads/1/3/4/7/134767321/nujijexudakiwag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460972/normal_5fd1ff00da92c.pdfIn PDF document text
    • https://waruzakelejabu.weebly.com/uploads/1/3/4/6/134600446/828591.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444369/normal_5fa15315525c3.pdfIn PDF document text
    • https://lapedegino.weebly.com/uploads/1/3/4/6/134689006/8330950.pdfIn PDF document text
    • https://nepuvojikonutoz.weebly.com/uploads/1/3/4/6/134677469/gepediwafexuf.pdfIn PDF document text
    • https://tevirilozarenov.weebly.com/uploads/1/3/2/6/132695732/eec2e23a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e37b37b2-b6dc-4a9a-b283-e46159b44ef0/77754182120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b00c3403-1929-4919-934b-72b8cc05cd04/63812647482.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/college_rankings_us_news_world_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa26f1ff-5bab-4b11-91e3-2c9a995976b3/kexupuwow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac4834df-f36b-4984-af8e-ee220b71c888/fogapa.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/90714744641.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4efa2b8e-8f1c-4e9f-8663-50c668919fa8/lotojenokuz.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFFC 4748 bytes
SHA-256: 6b503724d39cefaaa7098eacef8936d4c96d3a1ad0f75a2cd075775fbe045705