Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c22f424716d6ab9…

MALICIOUS

PDF

70.9 KB Created: 2021-02-26 23:23:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2cf72a0ce35ca387504a955e51f70147 SHA-1: 537ebaccecb1fb949cfe1aadf94e840dc9206448 SHA-256: 3c22f424716d6ab99b9be0f83476ca912d285463f66c5b3780d557dba479d88f
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://druttle.ru/award?keyword=ashton+kutcher+twin PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384164/normal_5ffd4522a67a6.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/idjcOgd/nufebuvusasirifuvizifa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370294/normal_5fecf49e9c915.pdfIn PDF document text
    • https://vinenuji.weebly.com/uploads/1/3/1/4/131453259/xabodepunejip-maroto-luvumexoten.pdfIn PDF document text
    • http://netewe5.xyz/kiki_s_delivery_service_characterscdyoc.pdfIn PDF document text
    • http://vbnmcxz.xyz/video_games_lana_del_rey_ukulele_tutorialq4alx.pdfIn PDF document text
    • https://cdn.sqhk.co/sudofeno/TlihPly/survival_simulator_apk_latest_version.pdfIn PDF document text
    • https://cdn.sqhk.co/jurufovowufu/jbiWKhc/94973336233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499660/normal_6014a1708c7b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488323/normal_5fcb5b03183e2.pdfIn PDF document text
    • http://qunit.space/gamefly_coupon_codes_september_2020eoha6.pdfIn PDF document text
    • http://copyrighthelpcentral.com/19212737043sx1sp.pdfIn PDF document text
    • http://rankingcoach-seo.com/75068589328nnbez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368235/normal_601638dcac8c0.pdfIn PDF document text
    • http://siankaanmexico.com/how_to_use_convection_in_ifb_microwaveh1wwl.pdfIn PDF document text
    • https://jenosexafunira.weebly.com/uploads/1/3/4/6/134686035/lukawimezopuxefewuk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385863/normal_5fceea14af376.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000dc18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC18 4792 bytes
SHA-256: 227cb3ada85b1dcd8edf1cc864df88a5f1119ac4e113ad307d37d83eb765b632
font_01_sfnt_off0000ec74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC74 10160 bytes
SHA-256: b654ae04adf7ac5e3440825bac93856bed1e2971bbc45f219788649e71724813