Malicious PDF — malware analysis report

Static analysis result for SHA-256 2db58d89b0ca76d5…

MALICIOUS

PDF

77.7 KB Created: 2021-03-18 11:48:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 9d54e69a42c52a204b00bbdad9f0c759 SHA-1: 2c9d619390bbd4ee75079253ef1bd5b39856b193 SHA-256: 2db58d89b0ca76d5dd08975f2ddb05f7e6352d8f60c0d40dd8a4a8cf9f354378
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9991

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xezojetit.ru/wix?keyword=tom+richey+apush+summer+assignment+answers PDF link annotation
    • http://xilenemivagola.mywebcommunity.org/kebubediwegami.pdfIn PDF document text
    • https://dofosigisez.weebly.com/uploads/1/3/4/5/134519942/d516c86040c519e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413373/normal_5fcd551ea51f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471240/normal_60247cbccbf27.pdfIn PDF document text
    • https://xepesirivow.weebly.com/uploads/1/3/1/4/131408502/2487648.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450728/normal_5fd7dbf7e24a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447914/normal_601d684d5df60.pdfIn PDF document text
    • http://fosavaxenu.mypressonline.com/wendys_frosty_nutrition_large.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447089/normal_5feb62c912074.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455890/normal_5fd03309a2313.pdfIn PDF document text
    • https://gosabejeda.weebly.com/uploads/1/3/1/4/131453015/guvibu-vokusakuma-tisipiwutukal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446502/normal_5fda09caee3e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426421/normal_604471095484e.pdfIn PDF document text
    • https://toposizijud.weebly.com/uploads/1/3/0/7/130776562/55d2218d8.pdfIn PDF document text
    • https://mokugutareno.weebly.com/uploads/1/3/1/6/131606089/vurelin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409092/normal_5fc5ffa97b563.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b9966a0-b25f-4ca3-9b47-17b796e863d6/cissp_mcgraw_hill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83013e05-c3d1-4f73-8a48-b096ca1b6d7f/fukufibekojilexepefisi.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/49226109890.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c0eeefd-fa32-4c17-80e7-901791031a18/1530640.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/bhajan_desh_bhakti_geet.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/life_and_death_stephenie_meyer.pdfIn PDF document text
    • http://jalebuvubo.myartsonline.com/40575206610.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/imei_check_locked_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/android_21_figuarts_pre_order.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_off0000f1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1E2 5460 bytes
SHA-256: c12ea68a59957fbea59fae8457b374b5ba25b3a5a9a6763572f0ef0f2e60344a
font_01_sfnt_off00010462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10462 10880 bytes
SHA-256: f653dbda2acc708f1a92eb0d644aa81ed5a127d79ac7c436b8bb892cc27b9944

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