Malicious PDF — malware analysis report

Static analysis result for SHA-256 5687d159e067d934…

MALICIOUS

PDF

70.3 KB Created: 2021-02-15 11:52:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 2d61fcb2ad06e62e43068616d2caeff6 SHA-1: bffb7eb5c11db2c194295c594840d7f1d6849204 SHA-256: 5687d159e067d934f2bf5f5a481b3f45821d66e2a0fcb0b589f20da6dfab4d45
136 Risk Score

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/123?utm_term=what+food+is+gluten+free+at+dunkin+donuts PDF link annotation
    • https://s3.amazonaws.com/tixeligufokup/sinudufavofejin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479236/normal_5fcdad5e1d37c.pdfIn PDF document text
    • http://detonicro.website/mtap_reviewer_for_grade_3_free_downloadtlasr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388422/normal_5fd69b2fd6709.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378830/normal_5ff2849ac4cb9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369153/normal_5ffc49b91958d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489411/normal_6028281aa6f47.pdfIn PDF document text
    • http://cabinetsly.xyz/photoshop_brushes_grunger8nfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466175/normal_5fd7c2d898012.pdfIn PDF document text
    • http://ig-copyrightnotice.com/sobre_carta_reyes_magos411s3.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/wuzujirufuborukojilarise.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383579/normal_5ff19aa79f247.pdfIn PDF document text
    • http://eeuuurrrrr.space/xukijozajerefevolisumnbrr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413583/normal_5fc73335cee2c.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/shopclues_apk_file.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kogosez.epizy.com/53616911800.pdfIn PDF document text
    • http://gakopukikix.rf.gd/balance_druid_vanilla_guide.pdfIn PDF document text
    • http://tifilumiteva.epizy.com/mejores_telefonos_android_economicos.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_off0000d544.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD544 5244 bytes
SHA-256: 790ce710d46435f08dc55fad135822701edb1ac1411bb5d31bb53687c0c7eeb6
font_01_sfnt_off0000e728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE728 10956 bytes
SHA-256: e148f907db373dccf200a97cc46baa8231a67f5de30f62f18d6117f70c555e2a