Malicious PDF — malware analysis report

Static analysis result for SHA-256 39b52070933b98a6…

MALICIOUS

PDF

75.6 KB Created: 2021-03-30 10:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 02f4919f8687c2523782c97bf0f0c51a SHA-1: 482dbd2291ad8cbd307a98ded5c6096e48bb0f96 SHA-256: 39b52070933b98a6412612e3bda48c897585505506b001d8620e3ebbb8460a04
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying a 'PDF_SEO_LINK_FARM' suggesting a large number of links pointing to external resources. While many links are benign, some are marked as unknown, and the ClamAV detection and ML classifier strongly indicate malicious intent. The presence of embedded URLs and the overall structure point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://winfreeiphone.xyz/how_long_does_a_panasonic_microwave_lastwkp8j.pdf In PDF document text
    • https://cdn.sqhk.co/keviwebewuta/geSiOvi/xidomoja.pdfIn PDF document text
    • http://pakupuxojopef.getenjoyment.net/what_is_the_purpose_of_reggio_emilia_approach.pdfIn PDF document text
    • http://ramuwesitavoz.mywebcommunity.org/barreras_y_puentes_en_el_proceso_de_la_comunicacion.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/h4dgjhg/what_is_my_server_name_or_address.pdfIn PDF document text
    • http://ecoterritory.store/glade_air_freshener_safety_data_sheetq8sm7.pdfIn PDF document text
    • http://goladelexugezi.sportsontheweb.net/tevulazesedaxato.pdfIn PDF document text
    • https://cdn.sqhk.co/litawoxelida/7iajiX5/activity_4._2_searching_for_meaning_answers.pdfIn PDF document text
    • http://kesuvajeb.scienceontheweb.net/honda_fit_2007_battery_canadian_tire.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/Xr6F2PkPTcg/wb?keyword=jensen%20marine%20radio%20remote%20controlPDF link annotation
    • https://s3.amazonaws.com/somamere/tp_link_hs200_wiring.pdfIn PDF document text
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_8976319168154816bb49cbe871f4bcb2.pdf?index=trueIn PDF document text
    • https://5e6d3f51-9b35-4a29-baf4-1f036254a461.filesusr.com/ugd/99a8f2_8e9a449095024d59893441f0d93239e5.pdf?index=trueIn PDF document text
    • https://cd489911-dc6d-4439-b408-84622343fb93.filesusr.com/ugd/d8e941_6b6af804fb964312aceb8148e76dd4c7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vigevot/kifajazubisibagew.pdfIn PDF document text
    • https://5849b288-062f-49f8-a71b-da420f1f00fd.filesusr.com/ugd/c068f8_716ee7178e414f3eb495e5a4bdd1204e.pdf?index=trueIn PDF document text
    • http://fetekovabu.onlinewebshop.net/21762088892.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/android_studio_button_onclick_change_color.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/sigasipewe.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/wofax.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/xedasebasakewosofox.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/noziviravujup.pdfIn PDF document text
    • https://70848fb0-0fd0-490a-9360-2ffa38fc212c.filesusr.com/ugd/08e331_57a3b377d04949d6bdb9834457b944a7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/liwara/caballo_de_troya_8_online.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_off0000ea02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA02 5072 bytes
SHA-256: be5162b4ea2c0d175a293ebb78946bd37d844f3826948b67d5f22875cc0ab265
font_01_sfnt_off0000fb23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB23 11128 bytes
SHA-256: a09d7f2e9fd57ca627ba3c34feda730c861a61bb7e2ee4335a37a661882779bb

Open this report in the interactive analyzer, or submit your own file for analysis.