Malicious PDF — malware analysis report

Static analysis result for SHA-256 29680166fe0144a3…

MALICIOUS

PDF

77.3 KB Created: 2021-03-21 06:47:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 687cbeaa6b0eb33fe95b1f3ab14e4115 SHA-1: cc3f8e11953c24d75ced032828fda0559fed31ee SHA-256: 29680166fe0144a3e05c67bfcdaa3aef26c88d09a579e4f2408a04dbe0cdc47b
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 SEO-themed, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to trick users into clicking on deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://bologen.ru/award?keyword=axis+bank+retail+internet+banking+form+pdf PDF link annotation
    • http://bapuvefiliku.22web.org/25341434355.pdfIn PDF document text
    • https://cdn.sqhk.co/dopebuxoz/gKpIFhg/skate_lines_2.pdfIn PDF document text
    • http://jezetufo.iblogger.org/58729340135.pdfIn PDF document text
    • https://cdn.sqhk.co/dediwifime/rvliieS/91374441633.pdfIn PDF document text
    • http://lodobinu.iblogger.org/motorola_surfboard_sbg6580_reset_admin_password.pdfIn PDF document text
    • https://cdn.sqhk.co/legesizas/WWibhie/42417383926.pdfIn PDF document text
    • https://cdn.sqhk.co/filovosa/Xidsthd/kaiser_permanente_watsonville.pdfIn PDF document text
    • http://fiwamixos.iblogger.org/bariyan_o_bariyan_song.pdfIn PDF document text
    • https://cdn.sqhk.co/wupifufexix/Z2hijdp/nawirisepugulo.pdfIn PDF document text
    • https://cdn.sqhk.co/kinuneba/7YGjfIo/ver_pelicula_beat_street_espanol.pdfIn PDF document text
    • https://cdn.sqhk.co/jirowolad/gchdhjA/kukezadalifuvulumul.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/tiluwisulepam/nolenerenabi.pdfIn PDF document text
    • https://s3.amazonaws.com/xutomoxu/27092512801.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/how_to_replace_old_health_card_ontario.pdfIn PDF document text
    • https://s3.amazonaws.com/dazovosugev/valiw.pdfIn PDF document text
    • http://guradewididexep.epizy.com/glencoe_math_course_1_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/painting_with_a_twist_locations_san_antonio.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/steampunk_mask_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zopenave/best_pmp_study_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/zodizesemoposuwi.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/marketing_plan_template.pdfIn PDF document text
    • https://c06d174a-caca-4ab2-b5a0-4525cd3135d4.filesusr.com/ugd/856cea_86c02a207a994634a5eb5ba134e67ab8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tiduro/14399316309.pdfIn PDF document text
    • https://a5fc3680-5c08-4cda-bd6c-abaa3bdf25bc.filesusr.com/ugd/ea5d7b_8eb067db710d49d5ae57ddac63605eed.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AB 5624 bytes
SHA-256: 15361127fbe7d1f4bdd4095c86a9338df74e8c408895985fc63b96568653c145
font_01_sfnt_off0000ecbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBD 10268 bytes
SHA-256: 02b90699d75711ba56761606300c375ffc375a7ea374697ca9f1949e13349a08
font_02_sfnt_off00011032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11032 16172 bytes
SHA-256: 461a1578f80084b2f2ca998a6e716936969cc9b33b2976d66eaaa57f6abee57a

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