Malicious PDF — malware analysis report

Static analysis result for SHA-256 29dd5690febb3137…

MALICIOUS

PDF

78.6 KB Created: 2021-03-15 21:56:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 4a6690dc5c3562c27a11e8c553860759 SHA-1: 4ed860034014b21123b823ad26af4af876ae23e6 SHA-256: 29dd5690febb31379ff2bf2996ab7d9d91b66a2320a7689517ddbfd6bd7828b8
136 Risk Score

Malware Insights

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

The PDF file contains a high-severity heuristic indicating it's a phishing lure using an SEO redirector. The embedded URL, https://jottigo.ru/wix?keyword=psvue+activate+roku, is the primary indicator of this malicious intent. While no scripts were explicitly extracted, the PDF structure and the nature of the URL suggest it's designed to trick users into visiting a potentially malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jottigo.ru/wix?keyword=psvue+activate+roku PDF link annotation
    • http://xejepurefe.scienceontheweb.net/articulos_veganismo.pdfIn PDF document text
    • https://cdn.sqhk.co/zenekukera/Qgjnzig/my_airtel_digital_tv_not_working_after_recharge.pdfIn PDF document text
    • http://zuzorovix.scienceontheweb.net/36536480263.pdfIn PDF document text
    • http://fukuzowi.sportsontheweb.net/lenovo_t430_charger_replacement.pdfIn PDF document text
    • https://cdn.sqhk.co/rifibimilo/jjzl42b/53476761417.pdfIn PDF document text
    • http://nituzovido.getenjoyment.net/fegerikodesusazuzim.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/sojebelevenex/53029175717.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/punjabi_movies_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/how_to_lock_columns_in_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/23526008276.pdfIn PDF document text
    • https://s3.amazonaws.com/dazemi/coral_reef_guide_red_sea.pdfIn PDF document text
    • https://s3.amazonaws.com/dosipive/kenmore_elite_washer_problems_recall.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/hack_for_asphalt_8_airborne_android.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/bally_bally_pakistani_song.pdfIn PDF document text
    • https://s3.amazonaws.com/xijuxosisomuna/venobaw.pdfIn PDF document text
    • http://benamow.myartsonline.com/lowesonasibarezotiv.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/scroll_saw_projects_template.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_off0000f767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF767 4888 bytes
SHA-256: a264a34a7220bb064da5b0c2baf7bc57ff71ac9ea2590a765ece8e247169b2eb
font_01_sfnt_off00010821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10821 11032 bytes
SHA-256: c6fb1696193fb44f71b46f9b1feebf14157bbb0ad2fe5a85d3a132a3519909ba

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