Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b675956e6581dc2…

MALICIOUS

PDF

73.9 KB Created: 2021-03-25 22:53:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f1df5e174f73cfbad4f2e33e694113d8 SHA-1: 1a4f84fcda0e4e5ea08f8a11921d0d84ea82807e SHA-256: 9b675956e6581dc203ee7490c8be6a69266c2e728d4521d402c9c1ecd13cc8db
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9997

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://maypoin.ru/aws?utm_term=dwg+file+viewer+software+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4418786/normal_5fe6a6e31db1f.pdfIn PDF document text
    • http://zixudivibudizu.scienceontheweb.net/zodumuxuvevugoral.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427313/normal_6033d34e22d81.pdfIn PDF document text
    • http://dusikazo.mypressonline.com/merikugupeniro.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447884/normal_5fe069d79c549.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470678/normal_6040788f1941a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416153/normal_5fe9b6d590653.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446494/normal_605017338fc4c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453560/normal_5fd680e2d1a21.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/75e2392d-6fd0-4814-93cf-f247960963fb/black_and_decker_leaf_hog_accessories.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/lowrance_elite_4x_ice_transducer.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/archicad_21_studentenversion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3099ee0-8e43-48fd-8017-07e46b7a9dff/haldol_davis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5031069-7d87-4888-a1b9-83c6c0ec203c/wasonawozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb62dc07-a4fd-4666-8f08-8f782c6aaeb6/10946073276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2d8849d-2d81-4111-8f39-b0790dae0eda/36342947765.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfb18243-489a-491c-af5b-3073843102b3/47815416989.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6aa1519-9dd1-4063-8a18-ba7fe0a65601/buvalete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/423d9595-eafb-4a70-935a-3cdf2e897d88/wexozobojunowebupok.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/i_am_that_girl_book_summary.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_off0000e494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE494 5224 bytes
SHA-256: a40f21ecea2ae306baf239fd64061ba7b251d196499b77373a2cd6464463ddbc
font_01_sfnt_off0000f68e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF68E 10500 bytes
SHA-256: 225556ea21353d873fd8dbb78243b5d0ce4a5f29bda8754ff51ac148be9e19eb

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