Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7234e196e5c7d9…

MALICIOUS

PDF

69.8 KB Created: 2020-12-04 07:42:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6ea9b5b8f88ecbb54eebb90738ca4b26 SHA-1: e9eb273939d40a2deb49a31c83e27bf8d939c0c1 SHA-256: fc7234e196e5c7d95a7203064255f62415233343d564b5bc0edf2d69be9e7fc8
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains text suggesting a lure related to a "fast and furious civic replica".

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gettraff.ru/123?utm_term=fast+and+furious+civic+replica In PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/pasisezogal.pdfIn PDF document text
    • https://segojojozifad.weebly.com/uploads/1/3/4/3/134324481/nelux_jafel.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/kavitokolezub/29168913063.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a49063ed-dc2c-4dda-a51d-9f95dfa0c851/fipetalifizoxizuxowapuvug.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/kaantasan_ng_pang_uri_worksheet_grade_6.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58178403f5353fdb4c3ff/t/5fc957917dd8fc1d310e3508/1607030674317/48368250683.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f88cbef4-7841-4e90-a7f6-44e06ad4092a/36789391555.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/kefevisulumagi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77897d98-7fec-4015-84e9-2805ad49ff91/day26_forever_in_a_day_zip.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc114788ef7301f8b11b9bb/t/5fc490e6f3de5e49b5f6b5d7/1606717670291/44872905392.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfceb2c14dfd36feeb11ef/t/5fc0ead4bc819f1cf4f948c7/1606478549360/compare_and_contrast_osi_and_tcp_ip_models_of_networks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47f91d21-cd2f-492b-b20a-3e333b34c15c/57054726046.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/responsive_html_code_table_generator.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b91e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB91E 7388 bytes
SHA-256: c1350994c27ccf02deeb3750029276f29629cef9b195deaa2fb26b508f370df1
font_01_sfnt_off0000d254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD254 5164 bytes
SHA-256: 29e22d20a051eebea9717d8e8229154a1d528aa01f3e530e25dffe642ce707bf
font_02_sfnt_off0000e405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE405 11616 bytes
SHA-256: a219e0fa1de260cf6e2baadbe9fe48798af6bad7b872b13ab7aed0f07fa162ba

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