Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d09f2eea310754a…

MALICIOUS

PDF

72.5 KB Created: 2021-02-14 13:49:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bda910940f760714a5d8f5be3d464978 SHA-1: 735002fde51676f9bdae4cde3ff488244ae9ee56 SHA-256: 7d09f2eea310754a99aa100f80ba10a1c4ec837a126583bc4551228cd96a4195
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://druttle.ru/wix?keyword=vidmate+apk+free PDF link annotation
    • https://ruwixotuso.weebly.com/uploads/1/3/4/1/134131383/6597795.pdfIn PDF document text
    • http://zelolugo.22web.org/gadasigidipoxarikomug.pdfIn PDF document text
    • https://zosotise.weebly.com/uploads/1/3/5/3/135393527/zewepususopazuv.pdfIn PDF document text
    • https://lotopunukulel.weebly.com/uploads/1/3/4/4/134473418/bugevisitowepojuwal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380876/normal_5fcbc832ac10f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374860/normal_5fee4d684a721.pdfIn PDF document text
    • http://masonufidowex.iblogger.org/chrome_version_69.pdfIn PDF document text
    • http://nefuwumimo.iblogger.org/jurassic_world_hd_tamil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501212/normal_60021fb2390de.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/mejigavukolu/anglo_eastern_deck_cadet_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/gadulete.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/2138813933.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/12562286161.pdfIn PDF document text
    • https://s3.amazonaws.com/ninasivol/montreal_metro_map.pdfIn PDF document text
    • https://s3.amazonaws.com/zuvovoxigumuz/arrow_down_image.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/rigelewowekuminasenubur.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/florida_boater_education_temporary_certificate_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/kokivevunakutiliwuf.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/66607831094.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d15b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD15B 2952 bytes
SHA-256: d8b907802410e675ceca2784509e58a9dae2947c1b2ad43e3e0c02687eabed47
font_01_sfnt_off0000dbe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE9 5004 bytes
SHA-256: 4d0ef67cd52db95461681bbc26bfb8c81b0e1baf97312980fd1562d15d4c265a
font_02_sfnt_off0000ece3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECE3 12220 bytes
SHA-256: 887bae6f25664a65e1314568ccc235ae3734cc084f7f3bc5df4863cba6991229

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