Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e35bd7e4233636f…

MALICIOUS

PDF

67.1 KB Created: 2020-12-20 09:26:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 1768e70091722d970f77b9f6631b43c3 SHA-1: 407084a04e83cb11741a87f1d8b73de4386d45f8 SHA-256: 2e35bd7e4233636f95706f79b258df6c279f7e0c714b110613244d99c9f92ea7
194 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
  • 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.
  • 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://ggtraff.ru/123?utm_term=thresh+hunger+games+quotes In PDF document text
    • https://static.s123-cdn-static.com/uploads/4370737/normal_5fcbd59829d98.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/rilexazejuzovep/kazaxivonifazosu.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/14170397219.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/kirativiwiwazexekugad.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/efficient_quest_guide_osrs_ironman.pdfIn PDF document text
    • https://s3.amazonaws.com/lekizopiloref/37144109319.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/aifmd_annex_iv.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/propylene_glycol_material_safety_data_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/35125708449.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/78714570457.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/amira_nature_foods_ltd_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/vabomiwexije.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/spring_framework_tutorial_for_beginner.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/1932741495.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_off0000c96a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC96A 5140 bytes
SHA-256: 63f53cda63acd2b886ed04a4c80b61be20364186e438ec804761fc6ac91b01b8
font_01_sfnt_off0000dab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB7 10928 bytes
SHA-256: 7ce535bec5b6210566436b44bc14e0d6da45999c87d43d59ba898037f4886db5