Malicious PDF — malware analysis report

Static analysis result for SHA-256 de6b10b356d15674…

MALICIOUS

PDF

66.2 KB Created: 2021-02-18 17:05:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ba17371f2f5d4b1b4dadeb9d16375fed SHA-1: 918204ef0ff447db08667be75893f7344ed3a4a7 SHA-256: de6b10b356d156743caa72a222ae1583ecc294edaa01f4c3b1f784bbc9e72426
96 Risk Score

Malware Insights

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

The file is a PDF containing multiple embedded URLs, one of which, 'https://baarspo.ru/aws?utm_term=advanced+d%2526d+community+episode', is flagged as a potential phishing or malware distribution point. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs within a PDF commonly serves as a lure for initial access via spearphishing.

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://baarspo.ru/aws?utm_term=advanced+d%2526d+community+episode PDF link annotation
    • http://garant-ritual.online/how_to_adjust_primus_iq_brake_controller2rrbg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391634/normal_5fe6577e7812f.pdfIn PDF document text
    • http://im-marceting.site/jinamukerumusemnyc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420752/normal_5fc98d5b72a03.pdfIn PDF document text
    • http://waystep.site/sri_lakshmi_stotram_in_englishevf5r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389576/normal_5fe66e6362ec8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478655/normal_6008cf3544d1a.pdfIn PDF document text
    • https://cdn.sqhk.co/baxorurifina/M7Kochb/mx_player_download_apkmirror.pdfIn PDF document text
    • http://jijufik.22web.org/mr_bechara_full_movie_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402940/normal_5fe07eb032c70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411709/normal_5ffd6eaeaea1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389376/normal_5ffbdf0d2075a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422136/normal_60109b185148a.pdfIn PDF document text
    • http://mrt36.ru/detozezot1g5.pdfIn PDF document text
    • https://cdn.sqhk.co/jogeguzotire/IjjjgGD/30104189804.pdfIn PDF document text
    • https://cdn.sqhk.co/livefivepa/iejgZsj/galaxy_sky_shooting_mod_apk_2._4._4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vapedefomagejev.epizy.com/xopijetiveni.pdfIn PDF document text
    • http://xesesezaxemu.epizy.com/lymphadenopathy_treatment_guidelines.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_off0000c6a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A4 4676 bytes
SHA-256: b1372187dacbfa2561b091d1c4629899326b208f2dd62ce868571d0971c353a5
font_01_sfnt_off0000d6a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A9 10544 bytes
SHA-256: d9bf214c1b36fd58a7dcf13d49f394bb41b99b43b57ccc4ef126314e25699086

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