Malicious PDF — malware analysis report

Static analysis result for SHA-256 686dcabe82f82413…

MALICIOUS

PDF

80.5 KB Created: 2021-04-07 19:45:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 64dac29b43303816e988e41675bd4b89 SHA-1: 38c031d96252a9fdbc813d8340145fc311049fba SHA-256: 686dcabe82f82413cebbfacd9b81e22bf49872ba242d84f2e11f29e446aad6ae
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to direct users to potentially malicious sites. The embedded URL 'https://xezojetit.ru/wix?keyword=apk+five+nights+at+freddy%2527s+sl' suggests a lure related to a popular game, likely to entice clicks. ClamAV and ML classifiers strongly indicate malicious content, consistent with phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xezojetit.ru/wix?keyword=apk+five+nights+at+freddy%2527s+sl PDF link annotation
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • http://nikaold.site/daxijazederomu8hcgp.pdfIn PDF document text
    • https://cdn.sqhk.co/kefesizo/0Iwjihf/74061709272.pdfIn PDF document text
    • https://cdn.sqhk.co/fuzekofuwe/idgivje/75209900486.pdfIn PDF document text
    • https://cdn.sqhk.co/ludukuni/hfjwg9F/evil_lands_online_action_rpg_apk.pdfIn PDF document text
    • http://therarbooks.com/pozab6x2xb.pdfIn PDF document text
    • http://copyright-notice-ig.com/13415504793f3gcd.pdfIn PDF document text
    • https://jiresuzava.weebly.com/uploads/1/3/4/7/134706808/pudazarafow.pdfIn PDF document text
    • https://vapasunodisina.weebly.com/uploads/1/3/0/8/130873802/28ba0bd1ab4f23f.pdfIn PDF document text
    • https://jabizujosewej.weebly.com/uploads/1/3/4/5/134584717/masamu_fitijenajeteniw_voxivogivejom_lemivujekemobi.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/Uhiidie/kisurirulitobafa.pdfIn PDF document text
    • http://helplnstagramcontact6088756.com/i_am_that_i_am_lyrics_elijah_oyeladew2iwl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0a9d52b7-bae8-445b-b6d2-8eba0f02533c.filesusr.com/ugd/729231_6837db726782459189a720eefb6b1baf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/14636657883.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/autograph_tamil_movie_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/sawomuzazelipat.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/aambala_cut_song_masstamilan.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/how_to_install_cydia_on_ipad_mini_without_computer.pdfIn PDF document text
    • https://f6ea5e03-7e7c-4dce-82ee-fd5d223759ef.filesusr.com/ugd/d203ad_f3a3c2855f7b46d597d87f8d94224b00.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vapite/pakotitetak.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/como_hacer_un_archivo_desde_mi_celular.pdfIn PDF document text
    • https://d934ed86-632c-4751-b35b-4303166f997e.filesusr.com/ugd/be0f55_43dffdbebcf04f65b00647d4c7af205a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/juvetaso/simcity_4_cheat_unlimited_money.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_off0000fac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAC1 5552 bytes
SHA-256: 03cf04d2723bbec7169e26282fa58fe2e802b8585ab13a617138b499c025c4ed
font_01_sfnt_off00010dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC6 10780 bytes
SHA-256: a03935c31f7ec634438a9fb72030509f24412c9f8cb46947775a880274f80d13

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