Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e936ac73f2e61ee…

MALICIOUS

PDF

75.8 KB Created: 2021-03-25 17:45:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 666e83de32553fb424f3453a87a2af5a SHA-1: 4e330c189c4ba5ef18160887741c0bbf26e8b284 SHA-256: 8e936ac73f2e61eee9b59db9bf9ba456b80e73e4aedd3b1fc4bf57a32aa96618
136 Risk Score

Malware Insights

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

The file is a PDF document that contains a URL leading to a potential download disguised as a converter tool. ClamAV detection and ML classification strongly indicate malicious intent, specifically phishing. The presence of embedded URLs and the document's apparent purpose align with a phishing attack, likely to deliver a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://vilenefex.ru/award?keyword=pdf+to+word+converter+apk+for+windows+10 PDF link annotation
    • http://kunozoxutokusu.mygamesonline.org/pufewujid.pdfIn PDF document text
    • http://xixijebufo.iblogger.org/pipibamobesap.pdfIn PDF document text
    • http://sawedes.mywebcommunity.org/vesedisodonoja.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/how_to_prepare_a_vegetable_garden.pdfIn PDF document text
    • http://vivubowi.getenjoyment.net/fasowusotofudoj.pdfIn PDF document text
    • http://funusiwevig.22web.org/basic_computer_course_in_english.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://renebizokav.epizy.com/43179484520.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/how_to_make_taco_bell_cantina_bowl.pdfIn PDF document text
    • https://5e20aa6b-77ef-4f11-9344-5454fb7c649c.filesusr.com/ugd/fb3aa9_8e398d0790114d99a2d838e2cb7faa52.pdf?index=trueIn PDF document text
    • http://bejopirobi.epizy.com/epileptiform_discharges_in_sleep.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/reforme_passage_ceinture_noire_judo.pdfIn PDF document text
    • http://tobikinos.onlinewebshop.net/63631310140.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/96571648737.pdfIn PDF document text
    • http://zenomidesedi.rf.gd/das_wunder_von_bern_review.pdfIn PDF document text
    • http://bekujefil.epizy.com/learn_powershell_scripting_in_a_month_of_lunches_download.pdfIn PDF document text
    • http://joriboka.epizy.com/risovilakakobokon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6231859c-ccae-4c41-b869-f80f7a724122/16807562945.pdfIn macro / runtime command snippet
    • https://d525ee04-2a40-494f-8ba9-fee52f7b18ee.filesusr.com/ugd/8b8e24_f855b55b95fa472ebf650133e6466809.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdb5aaa6-3271-497c-a899-d875bd0138a5/rofukoguzilugorazoki.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/bahubali_2_songs_audio_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e3e8df7-48ff-47dd-8ced-8814940d2393/garafekapudavapaza.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/zavefuvapibud.pdfIn PDF document text
    • https://6ec3981f-6443-463b-a164-91fc69f101d9.filesusr.com/ugd/7603ae_2a4d3f5563544e5bb28bf12b35a6a1ff.pdf?index=trueIn PDF document text
    • https://74269c25-1731-4359-90d4-804f54ef9c1c.filesusr.com/ugd/b5973a_33d5197010f14906828e72efba111073.pdf?index=trueIn 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_off0000e82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82C 5528 bytes
SHA-256: bc4f47056783e210f2dee026062687cd6981ead0cc130120bba53b0a8ef9a6ea
font_01_sfnt_off0000fb2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB2A 11248 bytes
SHA-256: 515bd9c1fe913a30e0662097d8ba93bab6a29c4968938710f0d31850d08ac084

Open this report in the interactive analyzer, or submit your own file for analysis.