Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb4b23db521031a9…

MALICIOUS

PDF

91.4 KB Created: 2021-03-29 08:59:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 41d8143594e12a3da946943f90a7bf7a SHA-1: 43dedf93c2a5b8ab1bc3d8a5cb472a49ec341f2b SHA-256: fb4b23db521031a94515b2c47b5f3f36d69a4a8a9946ad3148fd40cdd2e3118a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a search query for a JVC manual, likely as a lure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious content, potentially for further exploitation.

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://lozipotod.ru/wix?keyword=jvc+kw-r910bt+manual PDF link annotation
    • https://cdn.sqhk.co/xuwowasemus/ujesQNF/43392590940.pdfIn PDF document text
    • http://lumacy.site/1_tbsp_unsalted_butter_nutritional_information376ej.pdfIn PDF document text
    • http://mishabelle.ru/air_force_ones_white_womens_size_7kg9ch.pdfIn PDF document text
    • https://cdn.sqhk.co/xorazasuno/awig3id/fexoxubobomutonibemurijoj.pdfIn PDF document text
    • http://vevaxogejaz.scienceontheweb.net/82607224387.pdfIn PDF document text
    • https://cdn.sqhk.co/woguwubege/Gjiibgh/video_downloader_for_all_tiktok_no_watermark.pdfIn PDF document text
    • http://tb-films.ru/jiroviwuvesawubakot3blzu.pdfIn PDF document text
    • https://cdn.sqhk.co/bepemuno/cifdTUn/change_management_books_2020.pdfIn PDF document text
    • http://salea.site/828578339328m8f9.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/genedesowul/degeju.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/vewimerilupepuxosapozos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50463419-6166-4754-a79a-5d47af7a5192/how_to_ignore_boyfriend_at_home.pdfIn PDF document text
    • http://pivimufe.atwebpages.com/amazon_a_better_way_to_pray_andrew_wommack.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/29253703489.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/bpsc_ae_question_paper_with_answer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7710403-29e8-4295-87f9-a896e31d9a28/the_way_of_the_peaceful_warrior_movie_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a504cc2e-a21f-4447-aff2-5929aff516f0/hp_w2207h_audio_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/sudufusexowejipet.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/34469582996.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/figabapuvovobof.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_off000127fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127FB 5492 bytes
SHA-256: f492551587523dbd8b78964952385a7000028f38e9e90b2753c75bd811f6703e
font_01_sfnt_off00013ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AB5 11088 bytes
SHA-256: ba243272bac8b7b1889dc91cd8712a9232d5ff0960a1525f05f97e872e753e7f

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