Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d6edfcea87540ba…

MALICIOUS

PDF

99.9 KB Created: 2020-11-30 10:46:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 3ae9f3d0822c4ca8fcf39c923e6faf7a SHA-1: 134d9268576639d0c7c1ad97bb86b3aea8a46a23 SHA-256: 3d6edfcea87540baea4c358970467f5871f18da3be0f4f1db7d496a578c6fd96
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to drive traffic to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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.
  • 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://trafftec.ru/123?utm_term=shadow+spell+pdf PDF link annotation
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/8045519.pdfIn PDF document text
    • https://guwewekotijiz.weebly.com/uploads/1/3/4/7/134714515/kajek.pdfIn PDF document text
    • https://nikoxutaju.weebly.com/uploads/1/3/1/3/131378952/3310329.pdfIn PDF document text
    • https://dolujutizividev.weebly.com/uploads/1/3/4/8/134864897/wedimagedebovu_dulelonozipawof_luvixigupidad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456999/normal_5fb3407074f2e.pdfIn PDF document text
    • https://kizulivuvuruzor.weebly.com/uploads/1/3/4/8/134850547/1f5fbd218597a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388280/normal_5f99c047d2106.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc016b9c30a162e0c4e17a3/t/5fc0ffe3bc819f1cf4fb7004/1606483939772/kowodabozedara.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3aed99955c744b54ce5b8/t/5fc40bffe18c5c478e79986e/1606683649508/sowawezigig.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd077cdae50a014588b090/1606223740564/aeries_capousd_parent_portal.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf566dfa04221c71175981/1606375022523/13_days_worksheet.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc32c6ee9fc3622d530e568/t/5fc432d73570fb44d187fbc4/1606693591893/real_fortnite_account_generators.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfff689955c744b536924c/t/5fc1c60c7acac6192a02c842/1606534670820/mary_poppins.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dddd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDD 22968 bytes
SHA-256: 72faa527e3ffd14906d0cc19f6c1b944617b21e57d93c1b4ba37022743bf7ce0
font_01_sfnt_off0001254f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1254F 5228 bytes
SHA-256: 81890634cfcc7d1a87246381261b61c4dc9a6070394a150b4f71c5312cd415f9
font_02_sfnt_off0001372d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1372D 17980 bytes
SHA-256: fab7a0385018d62cbd92d6b83f890e1f9377be3bc7aff5cc18db63e15942de09
font_03_sfnt_off00016d4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16D4E 16132 bytes
SHA-256: 2def80ee9cf871b89fa1821d83521187f92649b88f41053709a5a2c79b3e7c85

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