Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b6444125a1d9054…

MALICIOUS

PDF

63.6 KB Created: 2021-02-17 23:29:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5e4f607d57afab3c4bd720fc2c6fb0ec SHA-1: 03e96dd86a6afdd34df3960d378374dbb74e512b SHA-256: 7b6444125a1d905448656687230217007a524ca3be9edf65eb8188bcb8f799a2
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://leonvi.ru/wix?keyword=late+start+bell+schedule+lafayette+high+school PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390068/normal_5fd761cd6b5c2.pdfIn PDF document text
    • https://cdn.sqhk.co/tamaladafa/hc6aogh/daxuzagajet.pdfIn PDF document text
    • https://cdn.sqhk.co/ranuvore/eOBjgPH/pimatevorog.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/8MFgezZ/siriusxm_deep_tracks_rush_tribute.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454990/normal_60166ff4d349a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485689/normal_600013474379a.pdfIn PDF document text
    • https://cdn.sqhk.co/mujejadalale/Vigmjg2/86923324754.pdfIn PDF document text
    • http://lumacy.site/totudifoxurunojezoloxumszkjt.pdfIn PDF document text
    • http://clubstore.info/26050617813zio63.pdfIn PDF document text
    • http://aycotoro5.xyz/callus_formation_following_fracture21zjk.pdfIn PDF document text
    • https://cdn.sqhk.co/suwuwewazaka/hicXBig/best_digital_marketing_degree_programs.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/muxegeza/xukitugadesajewexibegete.pdfIn PDF document text
    • https://s3.amazonaws.com/falevi/smallest_4g_android_phone_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/tugokajujenatafa.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_off0000bb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB33 5464 bytes
SHA-256: e1fadb4e1dc8ad9126488814eed54d8804d6d025e830aa05bb4e698555891dde
font_01_sfnt_off0000cdc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC8 9844 bytes
SHA-256: 8a0cb29d4e3627036b7a163ad17f04eedbd985c2161e009c100333b2d9025da0