Malicious PDF — malware analysis report

Static analysis result for SHA-256 e08ed6580a046d6b…

MALICIOUS

PDF

68.1 KB Created: 2021-03-02 01:11:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 10a92128a399713e72a3fdb4481ad630 SHA-1: 35fe9ba2a50ebeb5f215d1e6cf371b1bcae9c177 SHA-256: e08ed6580a046d6b43b6617789f7d99ec542c5a052b0903e18848508ce664c92
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=el+coronel+no+tiene+quien+le+escriba+pelicula In PDF document text
    • https://cdn.sqhk.co/lepagesali/nt0jjjk/stickman_rope_hero_prison_escape_survival_mission_2.pdfIn PDF document text
    • https://kekiwudegabute.weebly.com/uploads/1/3/0/8/130813612/e5ac22d22b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416786/normal_5fce313eccce0.pdfIn PDF document text
    • https://cdn.sqhk.co/nijusukelok/eXaDWgf/civic_turbo_price_in_pakistan.pdfIn PDF document text
    • https://mibivatoroxup.weebly.com/uploads/1/3/4/7/134762409/5514501.pdfIn PDF document text
    • https://nametipij.weebly.com/uploads/1/3/1/1/131164318/fe5dc6539fa6d88.pdfIn PDF document text
    • https://cdn.sqhk.co/texirova/lifdqp4/jutat.pdfIn PDF document text
    • https://gatepeduvemixif.weebly.com/uploads/1/3/4/6/134669895/18d38f4.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/zamemigojat/19396108874.pdfIn PDF document text
    • https://s3.amazonaws.com/mogipegi/jimonijirepesuluna.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/bootstrap_form_validation_angular2.pdfIn PDF document text
    • https://s3.amazonaws.com/tadevewuju/59136270514.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/vidositopamo.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/8983110175.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/nazobunefetizatusifavigo.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/60889134986.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/badri_tamil_video_songs_free_320kbps.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_off0000cabe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCABE 5152 bytes
SHA-256: c1260b80bcdc6422eaeea5a6a8eb56ae60c5982dea514b75fe0b0a7e02f4eb88
font_01_sfnt_off0000dc55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC55 11428 bytes
SHA-256: 1cb3ec50339dc1f61a508947dff9a437b534c8c1d02778d7270d90ede771642a

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