Malicious PDF — malware analysis report

Static analysis result for SHA-256 d30324cb2892a3f0…

MALICIOUS

PDF

82.0 KB Created: 2021-01-11 23:22:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: d02a43f29b35ce1e441021f39a1f7380 SHA-1: 2b1d7791a9a9fca7af0f8acb6cebf80cfad61553 SHA-256: d30324cb2892a3f0ab49e039784c3a0730ae3deb4c3bff05607db4214d5af7a6
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/aws?utm_term=armadale+train+line+pdf'. This indicates the document's primary purpose is to lure users to this external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URL is a high-priority indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • 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.
  • 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://gettraff.ru/aws?utm_term=armadale+train+line+pdf In PDF document text
    • https://static.s123-cdn-static.com/uploads/4451561/normal_5fedabefe2564.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480187/normal_5fb768d9e2c74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488842/normal_5fc2a058db3c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368788/normal_5f9a5a8c5f02c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387718/normal_5f94947aa93fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390051/normal_5fa1a84b51434.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451350/normal_5fda38fb1c881.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417419/normal_5f9be23f9c9ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477369/normal_5fdc260807bec.pdfIn PDF document text
    • https://site-1178171.mozfiles.com/files/1178171/volezunajedevasamel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410207/normal_5fb4bd3440efc.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/kewakuko/diagnostic_interview_schedule_dis.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/selafavetifopenezepuda.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC88 4996 bytes
SHA-256: fbd7c0a2afacec2ed2f3921633149c0e013e74b29a0025666977e1a8ff3d69be
font_01_sfnt_off0000ed6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED6B 11516 bytes
SHA-256: 41126b51bfe7262a36d44b202c3f6a847a14aec8e327235dd964fd94e548f8c2
font_02_sfnt_off000114b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114B9 17036 bytes
SHA-256: 9197a3983a877bd9f7bcf360bfdfa55ca9299a394ed4b6af2c8f4f4d13a79e4f
font_03_sfnt_off00012bd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BD0 6084 bytes
SHA-256: 5c86a376815d6f0efe6cbb93564a647c509e09040777fb1c2d4e15ff73d7b350

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