Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2333bbb8b179a1…

MALICIOUS

PDF

70.5 KB Created: 2021-05-25 09:43:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 777060e887d9cc66a3258842133662fd SHA-1: 419984f6f61c2b0cb9045ba9ddc606a797703fc6 SHA-256: ce2333bbb8b179a1cbd05e26a7b9cf6097b2f6d1703b792aab4936d5e9b83a22
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a malicious payload or conduct phishing. Although no scripts were explicitly extracted, the PDF structure and the presence of external URIs suggest an attempt to exploit the user by directing them to a harmful website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/strik?utm_term=scales+and+arpeggios+aristocats+piano+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4370078/normal_6024517e773c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487625/normal_5fff5e7392b0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_6043fd4fc99d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451736/normal_6068e6b60b76c.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/c9c994f4-13d5-453a-a917-1934229a9759/nafuxenulaxizixo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91cc124e-18d5-472a-bc83-c7b6e0b3b95c/death_note_lyrics_nascar_aloe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8205841b-2dfe-4e04-a4e5-72926f411eeb/68211121677.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/2896190293.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/pubg_mobile_hack_mod_apk_unlimited_uc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96a11589-2ef0-459b-8b54-5aa2fe853f68/anthony_quinn_zorba_the_greek_quotes.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/bikixizuzubuteligiwarafez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaf54d23-ff7f-4ace-9748-f788510194d0/verbos_irregulares_en_ingles_con_pronunciacion_y_significado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc3d4b4d-8502-450b-93d5-b3c50965e328/mepamavasujuwepemadabixuv.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/vaaste_song_dj_remix_bestwap.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/manualidades_navideas_con_papel_de_colores.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1af2bdc-129f-4e54-b228-7d856bbabfa6/warunobim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70e8b6b0-1f21-4342-ba51-bab2945461f1/rock_cycle_worksheet_8th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/49933324504.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/685447e7-43cc-4f44-88d6-d31cad1a85ab/aa_tradition_five_long_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/is_there_a_3rd_book_in_the_you_series.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/638d2060-a6fc-4f21-8290-993fba23ab54/xedumifafasiwapalumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b23c9294-ed3d-40d4-b176-34c81adc056e/85576502055.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_off0000d3f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F1 5424 bytes
SHA-256: 26a5a01bf8f82b73952a88dec630b8e13ecf84ce6189c98221706644313dd566
font_01_sfnt_off0000e673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE673 11172 bytes
SHA-256: 94437b949c0692bd7ad640a7ff7eb1bc163db5904c637d48e2006cf5d87d757d

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