Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5d43378eeb5c921…

MALICIOUS

PDF

74.7 KB Created: 2020-11-18 12:47:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 72b99c6cc692c4c79d194aa34a7434ea SHA-1: 9dfd0f7e31935a9668c8cf82dca0b16f1cd5936a SHA-256: d5d43378eeb5c92119fad8ca33a03dd12901d7a1abf3b02838350b1a16b9f616
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://trafffi.ru/aws?utm_term=punctuation+exercise+for+class+8+with+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421787/normal_5fb265fb2674b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a497619-431a-4e15-b764-e027f5fc1094/34900204919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e265ef93-c82b-4c23-aa39-2ee4a3f25238/madenadasetegagutezupok.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/latest_bollywood_movies_filmyzilla_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/toto_catalog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ffcc776-c827-4dbe-a734-f420d6965bd9/83405447651.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/754a44d7-ade2-4be8-bcf4-3cead758c991/wwu_gur_requirements_checklist.pdfIn PDF document text
    • https://s3.amazonaws.com/xisefowu/bigpaintball_aimbot_pastebin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5a2bba0-84fd-4119-ad14-bb8cf3f05174/33856459489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82103342-b47e-41b4-9c3a-5a49458626a6/gofizoxomuwifofuver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae239929-2a47-43ad-89d4-c2dda0b59c5a/56146614561.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5a71b87-279b-4a2b-8e44-82615455c397/guided_imagery_meditation_for_anxiet.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/full_form_of_p._o._c.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/ceh_v10_certified_ethical_hacker_study_guide_1st_edition.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CF 5324 bytes
SHA-256: 86dc01b4f9f42a58c4f0d19b70edfe636933de695b5f6ff3167eb8b832607319
font_01_sfnt_off0000e3ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FF 10860 bytes
SHA-256: bdc2042394d8c54fa5c480ec379379c8f488373d285ffd20a2f2ad6404568cf2
font_02_sfnt_off00010856.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10856 16240 bytes
SHA-256: 0674acd334b5d9d24fca46324cf24cdceda2da50095ae44f67deaeca14b27464