Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1efd55c76e551d…

MALICIOUS

PDF

79.3 KB Created: 2021-03-29 04:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92297f0834ddd9c0c29eeb96fe2cba4b SHA-1: 9f4ad5f726ed77bf895cf10cb9c3f49d44335656 SHA-256: be1efd55c76e551d667d89ca6a4aa3088e497dd1bb395418ff75560886e29f61
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI that redirects to a malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/strik?utm_term=who+is+the+most+heroic+person
    • http://merotudonor.mypressonline.com/diwegimate.pdf
    • http://gofadivus.mygamesonline.org/blackpink_ice_cream_song_download_mr_jatt.pdf
    • http://tiriruno.sportsontheweb.net/answer_sheets_of_upsc_toppers.pdf
    • http://zawugudumi.getenjoyment.net/taguxogokos.pdf
    • https://wefupavoxed.weebly.com/uploads/1/3/2/6/132682659/ce35d5.pdf
    • http://kixamugefuwa.22web.org/muvifefokefiguj.pdf
    • https://mitigovoponezix.weebly.com/uploads/1/3/4/3/134375948/6810036.pdf
    • http://dadivasim.sportsontheweb.net/beginner_english_grammar_test_with_answers.pdf
    • http://mebosopevux.iblogger.org/ansys_workbench_tutorial.pdf
    • https://sakedupepig.weebly.com/uploads/1/3/4/3/134355988/fapumugexu.pdf
    • http://xitimudajejo.mywebcommunity.org/pyxis_medstation_4000_manual.pdf
    • http://kavademive.sportsontheweb.net/pogamelawuva.pdf
    • https://belukuxar.weebly.com/uploads/1/3/5/3/135312366/4648537.pdf
    • http://dadivasim.sportsontheweb.net/cursive_writing_practice_sheets_free.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fijumusuxolegoj.atwebpages.com/asme_b31._3_free_download.pdf
    • https://uploads.strikinglycdn.com/files/a9a4b0be-5f3b-4f05-be79-92b964f7bbb5/what_is_theory_of_feminism.pdf
    • http://nuruden.rf.gd/75223330784.pdf
    • https://uploads.strikinglycdn.com/files/d57dbc17-439c-4eb5-870a-55fc2fba825c/wuvamatogozirokolexiseja.pdf
    • http://sorisavitekinuj.onlinewebshop.net/24376869903.pdf
    • https://uploads.strikinglycdn.com/files/149f3cc4-8141-4a8c-be20-3bfe2020f95d/jesus_at_the_center_chords_key_of_g.pdf
    • http://zepuwiz.atwebpages.com/dowuzibejaku.pdf
    • http://warozuvade.epizy.com/job_appointment_letter_download.pdf
    • https://uploads.strikinglycdn.com/files/69de3779-1b1b-4db4-93eb-b2ffda7af624/calories_arbys_roast_beef_slider.pdf
    • http://vekamodadon.onlinewebshop.net/longman_dictionary_free.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_off0000f869.bin
56b982b810307754507d1c333324661fd949880ce1bf5538376eacdf7ec83b16		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF869 4944 bytes
font_01_sfnt_off00010923.bin
d8eecd08e4935f3d54c76b0ce30101afcd41d79eb16d3a541734bd28386952cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10923 11384 bytes

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