Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c52d87fec890cf…

MALICIOUS

PDF

71.0 KB Created: 2021-03-20 11:17:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: edf69084a86f8c5d9acf7f8f4b3a55dc SHA-1: 568d2ccd5afbf7a0c17e386bbce11511b7166cca SHA-256: e9c52d87fec890cfd9ce65f7de32bbc74851134a5fc94395ffdf5c879bd20bda
96 Risk Score

Malware Insights

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

The PDF file contains obfuscated content and a heuristic firing for an external URI pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL is likely intended to redirect the user to a phishing or malware distribution site.

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://xezojetit.ru/123?utm_term=motu+patlu+ke+cartoon+free
    • http://sandiego-podcasts.com/86422109289hw4j1.pdf
    • http://gudutisiluzew.mypressonline.com/38360881052.pdf
    • http://ooovseanalizi.ru/2nd_grade_2_step_math_word_problems_worksheetyoiz2.pdf
    • http://gufutaca6.xyz/mazedagadifizigofwnf.pdf
    • https://cdn-cms.f-static.net/uploads/4371812/normal_6054c5067dc98.pdf
    • https://static.s123-cdn-static.com/uploads/4366009/normal_6006b853e6b03.pdf
    • http://taxokijoba.sportsontheweb.net/ielts_reading_tests_sam_mccarter.pdf
    • https://cdn-cms.f-static.net/uploads/4427268/normal_60252d2dc85db.pdf
    • http://kovafuwir.getenjoyment.net/king_size_bed_frame_plans.pdf
    • http://luminar3-download.xyz/blue_eyes_iris_patternscrtu4.pdf
    • https://cdn-cms.f-static.net/uploads/4503524/normal_604b374cb79b9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2aafa0e7-91b8-4db9-bdd8-3e5bb0d4c9da/best_arabic_language_learning_app_free.pdf
    • https://uploads.strikinglycdn.com/files/e0d9a567-7f50-495e-895f-2b5b6a311b62/mepuwexekedasutiwumumagiw.pdf
    • https://s3.amazonaws.com/sajatofubote/my_talking_tom_cat_free_apk.pdf
    • https://uploads.strikinglycdn.com/files/1b121d91-06a7-4fe0-b3b3-9e15bf7b30ce/marine_safety_officer_sa.pdf
    • https://uploads.strikinglycdn.com/files/c790eb27-40cb-47ac-9aed-e9ae103e0435/why_my_spectrum_remote_is_not_working.pdf
    • https://uploads.strikinglycdn.com/files/c39102af-a309-49e1-883c-a24996d3e042/51920216918.pdf
    • https://s3.amazonaws.com/lonozote/pukatonusetaxokagamolumu.pdf
    • https://s3.amazonaws.com/xukonakefules/jenimodexanibika.pdf
    • https://s3.amazonaws.com/rebomedug/31362720576.pdf
    • https://s3.amazonaws.com/sitok/22276921165.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd48.bin
a4656ab059be854ba645ee2eaa9d055dc3a7cc00c1446336dbe54bc38096c4ae
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD48 4900 bytes
font_01_sfnt_off0000ee12.bin
2404b94687524d1c6c371969e178e9cbbb1e902914a1c3f164cc103434d80fcd
pdf-font-stream PDF embedded font (sfnt) at offset 0xEE12 9720 bytes