Malicious PDF — malware analysis report

Static analysis result for SHA-256 aca3496dbf6fa66d…

MALICIOUS

PDF

68.5 KB Created: 2021-03-10 03:45:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 282f835c65ad73cb6b6bad580eebac0e SHA-1: e83649c2fca766d408b4c17efb78a0f41d044e6e SHA-256: aca3496dbf6fa66decd31c3238d2d42ad3e2ebc7af3b6d84bb6378c62a8a4418
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=anastomosis+adalah+pdf PDF link annotation
    • http://volosaty100.xyz/ante_nicene_fathers_complete_setwn8nx.pdfIn PDF document text
    • http://italiabeach.space/sinazazarumezedag0vu6d.pdfIn PDF document text
    • http://cg-designer.xyz/zoosk_apk_crackj4gfj.pdfIn PDF document text
    • http://jirafka.space/marriage_certificate_online_west_bengalp9gob.pdfIn PDF document text
    • http://good-production18.site/camera_for_obs_ios_free5rgb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468814/normal_600bcad7b5326.pdfIn PDF document text
    • http://fit-italy.space/56797126985n75ce.pdfIn PDF document text
    • http://store50off.info/toyota_corolla_2012_repair_manual0ia7o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453334/normal_600d022b67278.pdfIn PDF document text
    • http://it50off.pro/blog_logo_design_templatee46t2.pdfIn PDF document text
    • http://gatorama.site/kolijaxipugudojn5fuc.pdfIn PDF document text
    • http://investorlands.ru/tedumukubiteniluk30485.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/74895720495q0mns.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/tibanepoxilibud/noroot_firewall_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/tixeligufokup/rovatexenixumupedojowaz.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/first_law_of_thermodynamics_lab_report_politeknik.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/affidavit_of_service_form_arkansas.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/poraradex.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_off0000d205.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD205 5176 bytes
SHA-256: fcb981b0f7b3f11897254b6942f04dc0d9ffaaf987e22cdf6bff144acd9a65bc
font_01_sfnt_off0000e37d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37D 9852 bytes
SHA-256: 88e67ed87bbda8266d5f52444f9fdda98fd9e11c2ce8e041e6f29a71530f982d