Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d51b7f8cd39d49…

MALICIOUS

PDF

78.1 KB Created: 2021-03-11 20:50:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: d7046931d42d0fb49e9f8712174147af SHA-1: 4fe565ae8db10f7fc23a41ce7e690d17705e6ca0 SHA-256: a3d51b7f8cd39d4942cb52cf3a35e9d74d854c3789344103efd143c109111288
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI heuristic suggest an attempt to exploit users through a deceptive document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://druttle.ru/award?keyword=nervio+vago+funcion+digestiva+pdf PDF link annotation
    • https://cdn.sqhk.co/sugezigo/jbtdxrC/pokemon_go_promo_codes_that_don_t_expire.pdfIn PDF document text
    • http://zumepaposakuf.scienceontheweb.net/bhagavad_gita_quotes_on_death_in_tamil.pdfIn PDF document text
    • http://zodusen.22web.org/44161728303.pdfIn PDF document text
    • http://manamuposa.getenjoyment.net/was_it_real_or_a_dream.pdfIn PDF document text
    • https://cdn.sqhk.co/jivonaxadu/0zjbiiJ/16038400059.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/fgfScLd/five_below_las_vegas_strip.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/hfjeghn/best_free_rpg_online_games_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/brWgdje/gangs_of_london_cast_episode_4.pdfIn PDF document text
    • https://cdn.sqhk.co/zikufivol/eIjfjef/craftsman_automation_news.pdfIn PDF document text
    • https://cdn.sqhk.co/pemazekefise/jdjiaHH/wheels_on_the_bus_go_round.pdfIn PDF document text
    • http://sowopezamiw.medianewsonline.com/25533556990.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/haLjcL3/parentpay_my_parenting_expert.pdfIn PDF document text
    • https://cdn.sqhk.co/saxuxaka/r2jimDs/mebukaseroziduwumelij.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/buganabowumujef/ruratinamewiwifa.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibebulosaxug/46902413248.pdfIn PDF document text
    • https://s3.amazonaws.com/sizadagazagaj/what_does_it_mean_to_be_go_down_a_rabbit_hole.pdfIn PDF document text
    • https://s3.amazonaws.com/fonazuzixagizir/40887685331.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/dragon_ball_z_legends_android_release_date.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/cbse_10th_class_maths_textbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/xakusineba/83785234102.pdfIn PDF document text
    • http://jawozamamopenis.rf.gd/ethnic_minorities_in_china.pdfIn PDF document text
    • http://vurorevebosexu.rf.gd/sengoku_basara_2_heroes_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/sezena.pdfIn PDF document text
    • http://kuwijiti.myartsonline.com/craigslist_dayton_tools_for_sale_by_owner.pdfIn PDF document text
    • http://forezepolutaju.onlinewebshop.net/45208661922.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/jibatixo.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_off0000f2d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D6 5320 bytes
SHA-256: f02db64526838572254913065aa47a3674663b06a11328750992f2e11864a93e
font_01_sfnt_off00010511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10511 11104 bytes
SHA-256: a032b8853f5ca57f6b0d0eafadd7ec590f87ab498e13517980bbc5e54b997418

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