Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c7f0d2853d2181…

MALICIOUS

PDF

100.1 KB Created: 2021-03-31 19:43:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 0bf0e52a765cd78ebb6864ff3eeb4e8b SHA-1: 6f17b113821cf9b8175dcf7332ee7c88abf7cb36 SHA-256: 14c7f0d2853d2181ae9a21bba2079c96df587010088c77c5ab71eab3eb30bb0e
96 Risk Score

Malware Insights

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

The file is a PDF containing embedded URLs that mimic search results, specifically for 'Cahiers du cinema pdf download'. The primary URL, https://jumiwimov.ru/award?keyword=cahiers+du+cinema+pdf+download, suggests a phishing or malware distribution lure. ClamAV detection and ML classification strongly indicate malicious intent, likely related to phishing or trojan distribution.

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://jumiwimov.ru/award?keyword=cahiers+du+cinema+pdf+download PDF link annotation
    • http://tejovotemikodes.getenjoyment.net/denokorinimobokoladagax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380707/normal_5fd626546e431.pdfIn PDF document text
    • https://cdn.sqhk.co/tumosirewuw/0gfbehe/talking_ginger_2_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rivitovolu/jChal0a/dirixol.pdfIn PDF document text
    • http://mukinumatonewo.getenjoyment.net/azar_english_grammar_ppt.pdfIn PDF document text
    • https://cdn.sqhk.co/dilizilozok/ejdIQ9q/97024205323.pdfIn PDF document text
    • http://wonizojaru.scienceontheweb.net/wumiguwi.pdfIn PDF document text
    • http://xutexukoxobofi.mywebcommunity.org/fairy_tail_anime_ranking.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485939/normal_6015816d7096b.pdfIn PDF document text
    • http://mekujoviwe.mypressonline.com/how_to_add_cards_to_cards_against_humanity.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/desenaz/vinitategesekelumi.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/siwozawipusubigi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adee9d55-4587-494b-b3d0-082641319f50/80985955081.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/59444329584.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/57858141130.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d4e023d-eeba-40e4-8672-4bee123d259d/que_es_dibujo_tecnico_topografico.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/bixanotawojejikis.pdfIn PDF document text
    • http://vokesakogo.onlinewebshop.net/60986386858.pdfIn PDF document text
    • http://dapilejebuvone.atwebpages.com/class_12_accountancy_book_download.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/lumawimejapuboruposoji.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_off0001462c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1462C 5392 bytes
SHA-256: 7e971704cd8ca5440e4e09e1633583d39d0666511e218b86eb3d304faaef4617
font_01_sfnt_off00015866.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15866 14220 bytes
SHA-256: d06d0c9eec018070785e92fe2c1b1c8c5cf1988cad03c3c367b2142eecab5529

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