Malicious PDF — malware analysis report

Static analysis result for SHA-256 610c195fd5643c35…

MALICIOUS

PDF

83.1 KB Created: 2021-03-24 14:05:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 3433a2484a24061291c7cb1edee39ab1 SHA-1: d7bb1470754c5e9ad6ffd09f15e6f8c1abb5c0b3 SHA-256: 610c195fd5643c35544cc0459328ab6baeac4c39ef436293ed9b3fe2b0e5643b
136 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it's a phishing lure, using an image to redirect users to a malicious URL. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded URL `https://nipisod.ru/wix?keyword=nespresso+vertuo+machine+manual` is the primary indicator of the phishing lure, disguised as a Nespresso manual.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://nipisod.ru/wix?keyword=nespresso+vertuo+machine+manual PDF link annotation
    • https://cdn.sqhk.co/vobilurerire/Wjjibha/60842793965.pdfIn PDF document text
    • http://gixipures.sportsontheweb.net/things_to_make_and_do_in_the_fourth_dimension_download.pdfIn PDF document text
    • https://cdn.sqhk.co/sawitofi/irn4shg/arcane_quest_hd_apk.pdfIn PDF document text
    • http://zesaguzijor.mypressonline.com/central_african_history_books.pdfIn PDF document text
    • http://bavedibigilomit.66ghz.com/certificado_medico_de_bolivia.pdfIn PDF document text
    • https://cdn.sqhk.co/lisakopew/vDhbiii/9783453481.pdfIn PDF document text
    • https://cdn.sqhk.co/kogewole/46Ejbjc/46303196683.pdfIn PDF document text
    • http://kazaxidu.22web.org/what_does_the_saying_by_the_skin_of_your_teeth_mean.pdfIn PDF document text
    • http://lerinumemikiw.22web.org/envelope_design_template_vector.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pewebopufupe/raynor_garage_door_opener_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/votuweroxigezog/how_to_restart_water_heater_pilot_light.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/ponimunasazuk.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/alta_ruta_pirenaica.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/root_mean_square_error_interpretation.pdfIn PDF document text
    • http://kalotiwinilobiw.epizy.com/a4_brochure_mockup_template.pdfIn PDF document text
    • http://jimomurapujivo.onlinewebshop.net/attack_on_titan_tv_series_season_1_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/hp_8600_false_paper_jam_error.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/photosynthesis_virtual_lab_answer_key_northern_highlands.pdfIn PDF document text
    • http://jemileti.atwebpages.com/45762048957.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f91e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF91E 5084 bytes
SHA-256: c6d0d1ad3fe06032eeff269187485619ec96f59f61a95438706bbae644bb6cd6
font_01_sfnt_off00010a48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A48 11284 bytes
SHA-256: 7c46124c7a7c28587ec206c3506999018c0e2eecc587119c07c99a57a036eaf2
font_02_sfnt_off000130a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130A6 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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