Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed32f5b888c03882…

MALICIOUS

PDF

99.7 KB Created: 2021-04-02 04:14:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: cee9c6902ac9fb902f6f27c8cd8a747e SHA-1: 5b0da8ed77f5b9f24183f60b1f00f3eaca74f377 SHA-256: ed32f5b888c038825560cd56a009e3fa475c578ac51f6b6216cee15b823b4669
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains embedded URLs, one of which is used in a deceptive manner to mimic a search result for a document download. ClamAV and ML classifiers indicate maliciousness, and the presence of multiple external URIs suggests a phishing or malware distribution attempt. The primary URL points to a suspicious domain that likely hosts a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://zajinet.ru/award?keyword=administra%25C3%25A7%25C3%25A3o+de+produ%25C3%25A7%25C3%25A3o+e+opera%25C3%25A7%25C3%25B5es+correa+pdf+download PDF link annotation
    • http://rivoduzajoki.iblogger.org/vikinivigilako.pdfIn PDF document text
    • http://gopubewigofopa.iblogger.org/bebuzadokireja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378390/normal_6032a1c79ab76.pdfIn PDF document text
    • http://antonioit.space/740715660259m9n1.pdfIn PDF document text
    • http://befakupamexi.iblogger.org/where_is_the_serial_number_on_a_browning_sweet_16.pdfIn PDF document text
    • http://twitter-center.com/how_to_do_a_job_interview_with_anxietyvb1dy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465125/normal_6010712e8fe88.pdfIn PDF document text
    • http://komakukamuduwi.iblogger.org/commonly_used_adverbs_in_english.pdfIn PDF document text
    • http://netewe8.xyz/harry_potter_5_castlebq61j.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416331/normal_603cbab33f4c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://toxawilel.epizy.com/renawidinevunifuwapunug.pdfIn PDF document text
    • https://s3.amazonaws.com/mefonevimimix/black_decker_iron_not_heating_up.pdfIn PDF document text
    • http://misopipe.rf.gd/interim_report_in_spanish_translate.pdfIn PDF document text
    • http://xezemiguve.rf.gd/my_soul_magnifies_the_lord_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/how_to_reset_adobe_acrobat_pro_dc_trial.pdfIn PDF document text
    • http://sezazimunixog.rf.gd/75548852569.pdfIn PDF document text
    • https://s3.amazonaws.com/lusabifef/31181861712.pdfIn PDF document text
    • http://wepukuxazej.rf.gd/pusiluzepaxebu.pdfIn PDF document text
    • http://dagewokoxigu.rf.gd/bixiwuk.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/afsana_pyar_ka_full_movie_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/49245080205.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/suladir.pdfIn PDF document text
    • https://s3.amazonaws.com/kimone/gazelle_edge_machine_manual.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000164ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x164FF 17140 bytes
SHA-256: 5273b2587db90a92addc385e475dd0fb40854ff815510bbd5cee28d4fbd50635
font_00_sfnt_off000122d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122D7 6100 bytes
SHA-256: 488199119f1c55d1f32e4eeb798fd2fc6db53529b7ea0358df71b487b112ce13
font_01_sfnt_off00013630.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13630 16312 bytes
SHA-256: 6f00b43aac16a2bf578969b6867b1a1feca367973761bff04560b0ed38190f40

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