Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f2e1ee388f40a0f…

MALICIOUS

PDF

65.6 KB Created: 2020-12-16 18:56:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 7ba5eef966a5fcd6f990c60975731e4e SHA-1: a845410cc563e1bd3bfac6420dcb4da0d876a3f1 SHA-256: 9f2e1ee388f40a0f868d267e4de7f7fa9c2ba45988c896332796984d2e7de3f4
214 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics, including a critical alert for linking to known malicious redirector infrastructure and a high ML score. The document contains a large number of embedded links, suggesting it is part of a link farm or phishing campaign designed to redirect users to malicious sites. No scripts were extracted, but the presence of numerous external links points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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.
  • 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://traffmen.ru/wb?keyword=guidelines%20ich%20en%20fran%C3%A7ais%20pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380393/normal_5f914ce081829.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454306/normal_5fc092f54c813.pdfIn PDF document text
    • https://foxegakadop.weebly.com/uploads/1/3/4/3/134337736/08761ae1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388177/normal_5f959d8d67498.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381531/normal_5f9403afbb2e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413973/normal_5fc36a9ec8b6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383571/normal_5fc3c38fcf94f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368488/normal_5fbee38588e24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406789/normal_5fb7e996c2466.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/5fc5b305116eb00e3c6cd0a6/t/5fc5f8bef81c9a2a0c713a26/1606809791637/duwimozi.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_off0000c158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC158 5456 bytes
SHA-256: 41be70ad0b896c928d0993e9e4c2c7eb8b17a69de0d4bea1569de6d54f72e8c9
font_01_sfnt_off0000d3a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A2 11636 bytes
SHA-256: 88e4805d5d714ebf91737953036cf5bd18c341dfcdd1d655a6eba6c9b2644f85

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