Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3501dbc5a3df034…

MALICIOUS

PDF

69.3 KB Created: 2020-12-06 13:57:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 9d7ddc011e3cfd6cafba5593297d62f3 SHA-1: d00eec73449eb7690ec6b2dfea466927f600b594 SHA-256: c3501dbc5a3df034050b1001845a52b45f957935c2b03ada92571630a9b18f2a
214 Risk Score

Malware Insights

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

The PDF file contains numerous links, including one pointing to a known malicious redirector. The heuristic firings indicate it's a malicious redirector and part of a link farm, suggesting a phishing or scam attempt. The embedded URLs and the ML classifier strongly indicate malicious intent, likely to direct users to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffking.ru/aws?utm_term=basanta+ese+geche+song+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406208/normal_5fad702989435.pdfIn PDF document text
    • https://bafobuxog.weebly.com/uploads/1/3/4/3/134316473/f309e50e17bbf45.pdfIn PDF document text
    • https://wefapewirevuvik.weebly.com/uploads/1/3/4/6/134667644/5727037.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/ladojenefe/9402225224.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbceeef1491241adc443a46/1606217455045/susetudipofatumubuvefagox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/944ae1c7-df2b-4592-849f-a9ce883dcd8e/bakuwotifojozevapotuko.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfff2111f6a4198480a438/t/5fc1366deaf37e3b64c803dd/1606497902498/drift_max_pro_mod_apk_hack.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc599ce0a2757459b02e715/t/5fcbcf039cf56e0e8b1b9283/1607192324174/2073771058.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc595b3c14dfd36fe115843/t/5fca417fe262c015946de084/1607090559995/76688290521.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/safepe.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/abraham_maslow_contribution_to_management.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/440a4335-acec-49e2-b523-7f6c66f63a26/flash_games_super_mario_64.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/14836321779.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/89403789947.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28ae3ec917750a3e23ff5/t/5fc4bfda9d7936484023e5ea/1606729690511/scary_stories.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_off0000d2a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2A9 5160 bytes
SHA-256: 3fc3dfff447f62f717fb2b41c48b8ea0dde43c27905b90588f413420ea93818f
font_01_sfnt_off0000e436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE436 10676 bytes
SHA-256: 708a378962c86c657c6b4238a5cf5951beb4f2fe1f3ac44123af6a116eca6039

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