Malicious PDF — malware analysis report

Static analysis result for SHA-256 8182b36a8083f5dc…

MALICIOUS

PDF

70.4 KB Created: 2021-02-17 20:41:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 906a4722a63b1f161b1531a1c0776a2b SHA-1: 955932ace74a0a176cd784b600189895aa102984 SHA-256: 8182b36a8083f5dcbaaf8f72bda42dbc594844bec2bcc4157959408a163071aa
136 Risk Score

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://seumenha.ru/123?utm_term=what+is+sustainable+development+examples PDF link annotation
    • https://cdn.sqhk.co/zerurukoraju/HtSibnW/allen_theaters_las_cruces_movies.pdfIn PDF document text
    • https://cdn.sqhk.co/kufedefivuvu/hdibgcg/ralabiwab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jirarawoxi.rf.gd/videofx_music_video_maker_mod_apk.pdfIn PDF document text
    • http://duvugagaxanawag.rf.gd/perenelolugafisewakasup.pdfIn PDF document text
    • http://remibuvemofe.epizy.com/flute_sheet_music_sound_of_silence.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/11503414925.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/20939960739.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/tozosoza.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/kawiwikuvitamilalifir.pdfIn PDF document text
    • http://lojupefiduk.epizy.com/lafofozufujegodeli.pdfIn PDF document text
    • http://nebegekiguwipaz.epizy.com/facebook_free_for_android_mobile_phone.pdfIn PDF document text
    • http://sakigekoxigukil.epizy.com/china_visa_form_for_australian.pdfIn PDF document text
    • http://sesisat.epizy.com/kunuxurajudukomele.pdfIn PDF document text
    • http://zigexejumex.epizy.com/19169545659.pdfIn PDF document text
    • https://s3.amazonaws.com/tifuwuw/vemosufewelutebit.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_off0000d640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD640 5384 bytes
SHA-256: 687c39ebc5f647d7b7bb25edd31bbbffa4fb7ea6573d20ed19ea29f3c8090cd5
font_01_sfnt_off0000e878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE878 10656 bytes
SHA-256: 9586df217108e5ff50bedf5f3dca13b4f155c95e80719e41cbd2589f97a69a97