Malicious PDF — malware analysis report

Static analysis result for SHA-256 f15a44df4b5532d0…

MALICIOUS

PDF

77.7 KB Created: 2021-03-27 20:26:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0a3fc3acf2426850a6af01dab2b82296 SHA-1: 4289e4ffb6730fb4d79421a1cd9136a5f228d101 SHA-256: f15a44df4b5532d0a64159c5b4089c093b3a8f8bb509c94f7d44eab221fc37a2
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/award?keyword=constitutional+and+administrative+law+book+pdf PDF link annotation
    • http://riwetisanuda.iblogger.org/kevemelazuzobar.pdfIn PDF document text
    • http://thelandofbadideas.com/sipasu2plj9.pdfIn PDF document text
    • http://hook-up.fun/toccata_and_fugue_in_d_minor_sheets0i3zf.pdfIn PDF document text
    • http://titanovyi-filtr.ru/what_the_best_college_students_do_ken_bain8x3vu.pdfIn PDF document text
    • http://winoorama.space/dojasudegejerotidudnr68.pdfIn PDF document text
    • http://mosdendy.store/haruki_murakami_quotes_on_loveru8on.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuzojepume.epizy.com/44165117540.pdfIn PDF document text
    • https://s3.amazonaws.com/sajatofubote/duburetomisobewoz.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/62258787653.pdfIn PDF document text
    • http://gabigirinekib.rf.gd/bengali_film_gangster_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/pusori/echo_spot_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/patotale/79482293628.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/vevozanilijajiwilik.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/lolazejololelesox.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/what_are_the_advantages_of_technical_drawing.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/ace_personal_training_test_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/cummins_4bta3._9-_g2_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jarirotexab/dutasol.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/captain_underpants_full_movie_free_on_youtube.pdfIn PDF document text
    • https://s3.amazonaws.com/bezorito/newiv.pdfIn PDF document text
    • https://s3.amazonaws.com/vizegemawokaxe/28494322203.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_off0000f04f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04F 5448 bytes
SHA-256: 260781621c03512f654808dd14a771663541cd1d0e3d90ded5334305e79e8b6a
font_01_sfnt_off000102cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102CC 11128 bytes
SHA-256: 856ddd7cfb3099e02617b18ab9a2aff243357481d50a4aaf48395e0ab3ad0b22

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