Malicious PDF — malware analysis report

Static analysis result for SHA-256 248afe890380e679…

MALICIOUS

PDF

74.8 KB Created: 2020-11-18 08:50:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 1f77b09e63982e1fa68907189ce343b2 SHA-1: 348b8f820a5b737507b8af7b9392a22814edf0ad SHA-256: 248afe890380e679bc8c69c58579c3696e2e774694e968c175d1965ca346074e
164 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_SEO_LINK_FARM, indicating a large number of external links, and a PDF_URI pointing to a suspicious URL. The ClamAV detection also flags it as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to be a lure related to a search query, suggesting a phishing or redirection attempt. No scripts were extracted, but the presence of external links and the overall structure point towards a malicious redirection or phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/123?utm_term=what+kind+of+dog+is+scooby+from+scooby-doo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444098/normal_5f9d8b04c5fc1.pdfIn PDF document text
    • https://tugoxalimirufa.weebly.com/uploads/1/3/4/3/134310877/talenitelirijut.pdfIn PDF document text
    • https://dokipodaj.weebly.com/uploads/1/3/4/3/134306773/nonogimibegemotadiva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369916/normal_5f9a238f98afc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373004/normal_5fa8a37b2f2d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457577/normal_5fa5eba8a68fd.pdfIn PDF document text
    • https://pafuzoxim.weebly.com/uploads/1/3/4/5/134585506/suwububuzefis.pdfIn PDF document text
    • https://xezinazilasiza.weebly.com/uploads/1/3/4/3/134319357/juguzixipojadat-lerejugamifa-guvokof-tiwosowanot.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/silubebebefuju/external_style_sheet_example_code.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/baby_boy_names_starting_with_a_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/central_and_inscribed_angle_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/glastonbury_high_school_athletic_director.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/nokubotukaxoperoxubidex.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD07 5752 bytes
SHA-256: 6bf03b0f7dbc8c017852052ab0420c972adfcc3475e4dc3b8582d16f71309e11
font_01_sfnt_off0000e093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE093 11148 bytes
SHA-256: b77b3854f4160599fdb3627907523ec82211523ab982db04cd6aa8cc5b9ec7ca
font_02_sfnt_off0001069b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1069B 16344 bytes
SHA-256: f3b95f1269985bafc3dfb9b5b35e76df8a4d57039a143c013aed99c7cf3a4a89

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