Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb2d86d96b9a10f7…

MALICIOUS

PDF

65.6 KB Created: 2021-03-11 18:57:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d49f6cd17fafd75ff5708bda41de4a3e SHA-1: 6ddbdc91a05ad1b092e1e6ee6dcea2846fd7a70f SHA-256: eb2d86d96b9a10f7fd39c105653d042a89bf8f749704cb9275e5b04d5216a1c1
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 0.9263

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.
  • 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
  • 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://jumiwimov.ru/strik?utm_term=nicholas+sparks+newest+book+release PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421627/normal_5fd92802082bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369343/normal_60315525aebf2.pdfIn PDF document text
    • https://puluzoxaxidu.weebly.com/uploads/1/3/2/6/132683087/8427684.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401973/normal_603cca4e39bba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446165/normal_602291b90e34d.pdfIn PDF document text
    • http://ludirobus.getenjoyment.net/is_the_burris_eliminator_3_worth_it.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384325/normal_5fd17cf17ea72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454304/normal_60071cb7f230b.pdfIn PDF document text
    • https://nunibuzobaga.weebly.com/uploads/1/3/0/7/130740367/6250433.pdfIn PDF document text
    • http://mujudesuxiropa.sportsontheweb.net/making_money_online_surveys_canada.pdfIn PDF document text
    • https://tuzunogosur.weebly.com/uploads/1/3/0/8/130815213/e286091835.pdfIn PDF document text
    • https://wavuzujez.weebly.com/uploads/1/3/1/4/131406867/3969123.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473030/normal_60353e2aa372a.pdfIn PDF document text
    • https://bukekumagisalej.weebly.com/uploads/1/3/5/3/135333054/7080417.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/zodererezuzuxi/fonalox.pdfIn PDF document text
    • https://eda93683-a6ca-45e9-8056-ca7adea7f1dc.filesusr.com/ugd/d655db_036445be69ff46889f375cd13ed6a27d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xopugup/dueling_discounts_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/fesujasitafofu.pdfIn PDF document text
    • http://vidugozu.atwebpages.com/56688749310.pdfIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/dot_product_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/skype_for_android_tv.pdfIn PDF document text
    • https://f64a1a0a-debf-4843-a838-a34c0cae0f4a.filesusr.com/ugd/89602e_b0111bb4f73f4868a170e895ec4bbeac.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bisiku/icloud_photos_to_mac_desktop.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE481 5288 bytes
SHA-256: f132a3e619def8cff8d20a91b9effd84ac6b14408e523779dd3e7de8a740aedc

Open this report in the interactive analyzer, or submit your own file for analysis.