Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc15f8a5e5dfc96d…

MALICIOUS

PDF

75.3 KB Created: 2020-12-02 17:52:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 265f628109e17d6d5877297e1951d31b SHA-1: 147f50f9f31028f6eb4a9d408d70027301769398 SHA-256: fc15f8a5e5dfc96d49c3f82da411b2a35a00eb8eda607f81e2ecca404b7cb060
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://cctraff.ru/123?utm_term=rodney+dangerfield+quotes+no+respect'. This URL is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious. The document body appears to be heavily obfuscated or corrupted, preventing a clear understanding of its specific lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cctraff.ru/123?utm_term=rodney+dangerfield+quotes+no+respect In PDF document text
    • https://sutulozutujak.weebly.com/uploads/1/3/4/8/134884412/836f897654.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417675/normal_5fbcc7b783c01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421042/normal_5f9a6f246b2f9.pdfIn PDF document text
    • https://bemewewoz.weebly.com/uploads/1/3/4/6/134639120/gatezuwegarovob.pdfIn PDF document text
    • https://rosuxemu.weebly.com/uploads/1/3/0/7/130776582/nukegerefetodewi.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/gaxuremewuger/teacher_observation_form_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabom/wuwaviwinujinolanalerane.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/aerodrome_design_manual_part_3_pavements.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63be76fe-28f6-4a8d-8d1d-9ebfb2a1a934/xugokeburizomoxakakudu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a75f3f7-c380-4dfa-b310-41d1db572341/89908681927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d836469-5fe8-4e49-8079-f4617cb01dd7/17811430918.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73e9d76f-864e-4a20-817c-532ef72a2e25/4088974348.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e73d2677-f49c-430b-98ca-755584c4878d/hotel_design_planning_and_development_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c920376-da4f-4cdb-89f3-bc982075abbb/count_non_blank_cells_in_a_range.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/reasonable_suspicion_training.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_off0000e4ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EF 5556 bytes
SHA-256: d5c1e200d04203f91a3270a3b902a34915e070ed90063514d92e261333d8a40e
font_01_sfnt_off0000f7f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7F6 12480 bytes
SHA-256: bc5b33b7ed29e395c817c62c1aa83d2bb468a2cac8ec0e7bcdf0a5ac43c93e89

Open this report in the interactive analyzer, or submit your own file for analysis.