Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0da031968411505…

MALICIOUS

PDF

65.8 KB Created: 2021-02-21 18:03:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a0c85063e7420c50b52f49ea485e8fdc SHA-1: 2b0a6dd1a80bd160c8bf3817b2a765307caa1dab SHA-256: e0da03196841150594e843d6940b35ee1ce0e7328b77ea88c0514b51915357f6
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=evil+barney+png PDF link annotation
    • http://ourfanz.com/jokamabezofiruno5e6gi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403407/normal_5ff61b77d43e5.pdfIn PDF document text
    • http://instacopyrighthelpteam.com/389313541374hwo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451544/normal_5fe416707c3ff.pdfIn PDF document text
    • https://cdn.sqhk.co/wusoxopejezo/jbhdjfj/73429280799.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/caracterizarea_lui_ieronim_din_nuvel285fr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482418/normal_5fc68f2810001.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368958/normal_602b6dfd6ade1.pdfIn PDF document text
    • https://xaxuxogupovugid.weebly.com/uploads/1/3/0/8/130874119/8744386.pdfIn PDF document text
    • https://nodejobirutita.weebly.com/uploads/1/3/4/7/134748641/rugofab.pdfIn PDF document text
    • http://teenagetutor.net/premier_protein_whey_powder_vanilla_milkshakeop77n.pdfIn PDF document text
    • https://sijokazodile.weebly.com/uploads/1/3/1/4/131454207/pideg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443810/normal_5fef6f431772f.pdfIn PDF document text
    • https://notolunezoxab.weebly.com/uploads/1/3/4/8/134846452/5903218.pdfIn PDF document text
    • http://armlur.space/bobol_wifi_tetangga_dengan_android3li3g.pdfIn PDF document text
    • http://wssummer.space/diy_hydroponics_systems_builder_guide7ox8x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473044/normal_5fe652ce998d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454052/normal_60068ce6757c4.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_off0000c665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC665 5068 bytes
SHA-256: 3c35021e4029ab0cf34812b54888cd5030167cbbcb0015aa432c413bbbf6ef66
font_01_sfnt_off0000d7c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C7 9920 bytes
SHA-256: 168756e6215845f33e5b524f474b49f423f06fbba9cba7be609b767a637b8eb4