Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6f0ebf5eb5ba2c…

MALICIOUS

PDF

136.9 KB Created: 2021-01-27 14:19:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: bb95340902d737a053838c1b6bc4f6dc SHA-1: 15d82852fde3926a7ff6bf85f45e09f3e72e381c SHA-256: 7e6f0ebf5eb5ba2c5ee9abb24357164b1aacfeb8f9730ab385ebe1dfb54677f4
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm with numerous external URIs. The presence of multiple PDF links, including one pointing to 'http://money-team.site/80236144423mpx07.pdf', suggests an attempt to redirect users to potentially harmful content. The embedded URLs and the PDF structure indicate a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/123?utm_term=nefera+de+nile+age PDF link annotation
    • http://money-team.site/80236144423mpx07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459914/normal_5fe38ddd8fb11.pdfIn PDF document text
    • https://fikosaxan.weebly.com/uploads/1/3/4/7/134753192/e9f0e81162306.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367631/normal_5fc5e5c60dec9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424024/normal_5fcd12b0926be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455396/normal_6005b1cb2e93b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375194/normal_5ff31580c011b.pdfIn PDF document text
    • https://cdn.sqhk.co/segenapiza/eZP5ihv/roku_premiere_plus_replacement_remote.pdfIn PDF document text
    • http://verifybadgesbusiness.com/mikujexerifelosdfr5k.pdfIn PDF document text
    • http://the-glow.ru/zovizafidafmgm7.pdfIn PDF document text
    • https://cdn.sqhk.co/jilebodetifa/g9Rhegc/83118412663.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458833/normal_6009b102db549.pdfIn PDF document text
    • http://aov.one/22907641673cnw0t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402294/normal_5fe53cba62e86.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/tokudapele/28757366381.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_off0001c5e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C5E9 4868 bytes
SHA-256: 0b93dd435ac1e0d12cf8739eaa9f7ad1b0979c028663f3eee176e0336d6f5906
font_01_sfnt_off0001d689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D689 12788 bytes
SHA-256: 66b1846fff466de390f119249b1625d7b6e99b656683796a46fd566d151dad45
font_02_sfnt_off000200da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x200DA 16204 bytes
SHA-256: 0318b400cbd4eb80818b7eb131bcca2e18f343f850c5eb1573e525fea31f4d56

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