Malicious PDF — malware analysis report

Static analysis result for SHA-256 3342a92cf06b02d2…

MALICIOUS

PDF

98.4 KB Created: 2021-04-02 01:51:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 8019c7083f6666ead8ff7b789abe1819 SHA-1: 0dc2e3e8be63e050b68f96b756f8728e2ea34ee4 SHA-256: 3342a92cf06b02d224d4e39ac2ace771fa8c6095153382b396a51bf52f2ded9a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a lure for downloading further malicious content, disguised as an essay PDF. ClamAV and ML classifiers strongly indicate maliciousness, and the presence of multiple suspicious URLs suggests a phishing or malware distribution campaign. No scripts were extracted, but the PDF structure and embedded URIs are indicative of malicious intent.

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://soxebez.ru/123?utm_term=disadvantages+of+free+education+essay+pdf PDF link annotation
    • https://cdn.sqhk.co/merojuniv/dhaA0Js/hitman_agent_47_2007.pdfIn PDF document text
    • https://cdn.sqhk.co/vopiruwikil/eicgfie/alchemist_code_reroll_guide_2019.pdfIn PDF document text
    • http://winoraama.website/towokivuvopajebofamgdi8.pdfIn PDF document text
    • http://netewe9.xyz/betuwufi4v6gm.pdfIn PDF document text
    • http://afracheat8.xyz/fugukifiborasuzanuvonexpdex9.pdfIn PDF document text
    • http://vegoletox.medianewsonline.com/pdf_converter_combine_files_free.pdfIn PDF document text
    • http://geesecam.com/crown_financial_budget_worksheet_excelhx6ms.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443819/normal_6014fe30ce8c2.pdfIn PDF document text
    • https://cdn.sqhk.co/wezopexa/YYjdjeU/pin_pulling_puzzle_game_app.pdfIn PDF document text
    • http://trokot-online.xyz/dogs_are_better_than_cats_argumentative_essayihl03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369647/normal_60308d5a2c66a.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/hiaQfhh/jajefijibusokewupolal.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/fujadabez/zekidegid.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/abcd_2_full_movie_480p_worldfree4u.pdfIn PDF document text
    • http://madigekole.onlinewebshop.net/segment_routing_clarence_filsfils.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/50136673894.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/6198524706.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/751388635.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/how_to_pair_hbs_730_with_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/pujirageg/incroperas_principles_of_heat_and_mass_transfer_1st_edition_global_edition.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_off000143b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143B6 5452 bytes
SHA-256: 6eb05cf4e74dc596b8f757eff450ee49a119ad13f8670c32328dd1edabcbe6df
font_01_sfnt_off00015673.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15673 11472 bytes
SHA-256: 2bb2548fce7aab3841ae0aff3b27340950aa9d0fff113a491fe70f13a5f60bd2

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