Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bff52734e0097b1…

MALICIOUS

PDF

73.4 KB Created: 2020-11-17 21:43:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 65c8f81f4dae9e03f44366a6bc153408 SHA-1: 90f882ccbd553581d7b6aed52c053b01f7d127cb SHA-256: 6bff52734e0097b1122a7cabdd4d605734c66cc82ad634d33da2c8b551bcd71b
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 0.9998

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/123?utm_term=chandamama+kathalu+stories+in+english+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4486213/normal_5fb36dd341ba4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402960/normal_5fa42bc3c5728.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385887/normal_5f9f9305ea2aa.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/wipotegadodorek/zombie_survival_guide_book_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58cdeb4f-e4d2-4a93-9233-e63758f850aa/kudomugukezorov.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/vukibutudegajaxirorekizo.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/p1299_ford_focus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2ebbc2d-3ada-44a4-8d46-05e2311ea1f5/47506307352.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ac4f843-c520-4ea1-9158-c9c3785af86f/16321396794.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39a21294-d3f7-4deb-964f-d06860211619/71050595838.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f93dd2a2-2a3c-4b0f-8027-8f086804a62e/xozodu.pdfIn PDF document text
    • https://s3.amazonaws.com/dirijazi/51195999752.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/624bb5d6-dca4-4231-a03f-ebbc4aedacbe/schwing_stetter_batching_plant_cp30_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5f7aa5f-e61d-4560-a656-3ca378c5bc49/lazutexeluturovuwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f9ef9ac-14a0-4915-b179-b7c54eb80813/nam_su_vui.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/manual_for_hp_photosmart_7525_printer.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_off0000ce6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE6C 5424 bytes
SHA-256: 57f717ab383a5a0638a64a4ef82e82effec4b38a396ca7cc9c32d374d56ed073
font_01_sfnt_off0000e0a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0A4 6140 bytes
SHA-256: 2d9795a12ccf7092406fbfdcd410114a02a42fd7f18eec8a9c2d6c44f9a3584e
font_02_sfnt_off0000f211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF211 11084 bytes
SHA-256: ba7ebf76e0e50bc78fde6d6bc17c09a157e152770153de7eb719bb8e2c269c9e

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