Malicious PDF — malware analysis report

Static analysis result for SHA-256 30ca49b02569fe4d…

MALICIOUS

PDF

98.0 KB Created: 2020-12-01 06:45:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 89ee8c984fc314505887f213427347f2 SHA-1: 92ce80f8e7fe091e1ad36c82984ef92b7cde2d01 SHA-256: 30ca49b02569fe4d38479cd2c9614e080ca1cb82683ba69dfd917a8de5a9598c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • 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://trafffi.ru/123?utm_term=verbs+like+gustar+worksheet+pdf PDF link annotation
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/1ad5e0637f.pdfIn PDF document text
    • https://loxekezipoga.weebly.com/uploads/1/3/4/6/134678149/sawokazus-nujij-desipipilebo.pdfIn PDF document text
    • https://mivijupa.weebly.com/uploads/1/3/4/5/134578330/7549528.pdfIn PDF document text
    • https://jigejoxipivigif.weebly.com/uploads/1/3/4/7/134731155/2269299.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/da50c7e0ec8f483.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/maven-dovuroripugeto.pdfIn PDF document text
    • https://beripetalodewug.weebly.com/uploads/1/3/4/8/134865824/6743079.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe02c54f98375720a6f06b/1606288070767/5s_red_tag_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e11a4277-d756-4e46-afdf-35b19e8dc245/zewajutobuvake.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50dfce5c7695ca9b64519/t/5fc598cfe6d49a06bb53b009/1606785232298/sharepoint_2010_tutorial_for_beginners_step_by_step_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b1888e5-1a95-49e5-b51b-e7cc0aab0587/auburn_university_calendar_2016.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb23d95b-78e3-45fa-8812-c13d4b40fa3b/dokiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac730a24-3c58-4510-94bb-4ce29e2f1813/dikujele.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe01183f75b166439b9b0a/1606287640665/21716699146.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc042db8787e8798968ae67/t/5fc0fe353570fb44d12697cb/1606483509712/gobosozinejofumoz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc002d40b6b03258f30bf3d/t/5fc2c89ebc819f1cf4348d7c/1606600862560/wifikill_apk_pro_free_download.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD2 18048 bytes
SHA-256: 794c1c908548876fec55d83de875a631c6ceda99d609caa1fb716cca3754d551
font_01_sfnt_off00012740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12740 5564 bytes
SHA-256: edaa2f6d6736ef1cbf918880058a1d2db0630f24d95f6371efbcd902d97300d4
font_02_sfnt_off00013a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A34 13284 bytes
SHA-256: 50ef2d75090588c255fdb006b3a8edac28efedf9b97d5314f7e920f7aaa62393
font_03_sfnt_off000165df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x165DF 16036 bytes
SHA-256: 354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb

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