Malicious PDF — malware analysis report

Static analysis result for SHA-256 27c98e896789376b…

MALICIOUS

PDF

73.9 KB Created: 2020-12-18 00:25:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3cb0dd3573ebd263be1b2661b03ed032 SHA-1: 9b2c570a3aeddab0aa8981ddcc530c1217eb3acf SHA-256: 27c98e896789376befff3d325779463f4f604d1e6e76e73856afacbff5a88a9e
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 0.9998

Heuristics 5

  • 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.
  • 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://traffnew.ru/123?utm_term=paladin+tank+rotation+ffxiv PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469128/normal_5fda982db901c.pdfIn PDF document text
    • https://vavaterojitenoj.weebly.com/uploads/1/3/4/8/134898986/xiliradebuwiv_borez_gepekuwod_nuguxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486523/normal_5fb30362a0595.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487665/normal_5fadbca1669ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482403/normal_5fc9410f7b92b.pdfIn PDF document text
    • https://tisikifa.weebly.com/uploads/1/3/4/6/134614219/wilizufamoxe.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/5fc0fbb61c8c741314323605/t/5fcf80ff0496d067bdd5ade5/1607434499764/bluetooth_speaker_amazon.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf67623f75b16643cd4311/1606379362926/71523791774.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc69f2de5c7695ca9c347cc/t/5fc956e3e3a31b0ee71586cc/1607030500270/management_information_systems_good_major.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5d156c89e1c4b8fe05cfa/t/5fd1c810fec2791e31074c37/1607583770661/92908157380.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffc42bda9c57a97b92422/t/5fc315fe08845d0924ef54b3/1606620670834/eureka_math_geometry_module_1_lesson_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6ca8548-c8cc-4132-b188-15d3a1fea4ac/26212591658.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28b4ea13a450babfe95ac/t/5fc534c518e72e5fdb80ae1b/1606759622685/69894834077.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e607df132613bbbdbdb8/t/5fcdc5d4d336b863f0e28fa0/1607321045882/64834854107.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53b1d770-a143-41f8-8ae4-911b1187fb43/art_carr_aod_manual_valve_body.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

Related samples 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ceee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEEE 4916 bytes
SHA-256: 11576815d2f31b799565d10c191bead9198f309cceb503daff61351663bf51a1
font_01_sfnt_off0000dfbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFBD 10788 bytes
SHA-256: e193b71724355b51d24e2cef9cd393b9a1f42e63636add244950e2bf4791d0b3
font_02_sfnt_off000103a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103A5 16104 bytes
SHA-256: 6ea50b7ad22d4e97b2487d6f79384c41055b70ec5d83bc9cd0bf1d8388a7fb98

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