Malicious PDF — malware analysis report

Static analysis result for SHA-256 b720ec39e0c64e38…

MALICIOUS

PDF

70.1 KB Created: 2020-12-03 18:42:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 7f855746d852c5b923e586182719fac8 SHA-1: 5edc953024cdf5f4166b9c1b24cb7000b995a676 SHA-256: b720ec39e0c64e38c1a763c58207bd525c5c813c36545bdc4b2abd9d38b29eb1
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Hitchhiker's guide to the galaxy ending' and embeds a URL pointing to a suspicious domain. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?utm_term=hitchhiker%2527s+guide+to+the+galaxy+ending PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4500417/normal_5fb6d8927f8b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380229/normal_5f91b2559b5e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408997/normal_5f988b17cc607.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475741/normal_5faed5d05cf53.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456389/normal_5fb869bbabc8a.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/5fc013b624b06a7eb3fa8a9b/t/5fc1115bcb3e0f5771755005/1606488411487/famisire.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc34e1bf9866f3fd2e3a1df/t/5fc55a34e6d49a06bb459dde/1606769205666/otc_scan_tool_3210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f078088-90c1-42ed-8a9f-814297831e92/wodotudolisebu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c54e7dda-2c50-4afa-b1e3-305610f1ad28/96259701671.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc30220ec917750a3e588e7/t/5fc81253ec83506b046aa20e/1606947411294/puputeseximak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a426c3d4-f3e4-4707-8552-62a8f0b96894/shark_navigator_dlx_nv70_replacement_hose.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_off0000d35f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD35F 5432 bytes
SHA-256: bc6dfe209aceb65cc9a6385c001c66b5260059420b808743b16a3cf23035244f
font_01_sfnt_off0000e5db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DB 11096 bytes
SHA-256: d03a0ff3d0fe5fd8b5ec1b8b01372ece16d87006447dd0d0d2c16d0138bfa7ae