Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c6b1d7fa9f10ebd…

MALICIOUS

PDF

73.5 KB Created: 2021-02-27 10:58:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2233d067d05e94be3ecc692a3dac2319 SHA-1: d787d42d53ea6a105a90d31fb21916859fba8bbf SHA-256: 4c6b1d7fa9f10ebd87c29b25fec661f6cecd0abe7a31e779ef9ee4f3f3bc482e
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://midufefew.ru/award?keyword=36+marriage+questions PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494868/normal_5ffac571da056.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/6iemXIN/48219849792.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458163/normal_600204ad3d303.pdfIn PDF document text
    • https://cdn.sqhk.co/bupewazadufa/fjaicjh/66638069662.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455684/normal_6023ebd17a4ab.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/how_much_is_a_polaroid_sx_70_land_camera_worth.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/b9gdias/cobra_fi2000_powrpro_black_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380525/normal_5fe7a764ee4ed.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413703/normal_5fef3f6f33e30.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/ji0cyif/weather_forecast_west_los_angeles_california.pdfIn PDF document text
    • https://cdn.sqhk.co/nupozifulija/mQiaaie/joluninekafafutub.pdfIn PDF document text
    • http://bikomowaxibujoj.medianewsonline.com/53843560253.pdfIn PDF document text
    • https://cdn.sqhk.co/xasurila/dsghvif/jcpenney_crossroads_mall_portage_mi.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/gekixadonuru/scottish_father_of_the_bride_speech_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/7339143610.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_off0000e4ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4BA 5320 bytes
SHA-256: d27443afe48896eb63abd835e2d6a08bf9f39bec35b259f7ee10c9d83a5cd4f5
font_01_sfnt_off0000f6b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B4 10184 bytes
SHA-256: 425707dd79bff40cc7827b0db0d9957ebee7ac29159fd12ddd77262e5ffb6098