Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e4d6c210abc739…

MALICIOUS

PDF

58.6 KB Created: 2021-01-31 20:10:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 00847a4d9debc8a1c65af3e1e63e052c SHA-1: eb50ce7d7127c5ec9cb73b5f2ac6fd6311deca36 SHA-256: 80e4d6c210abc739f3d89c98cbeeb76f6045f162296f41bbf0933e0011f51215
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution 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 0.9447

Heuristics 4

  • 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 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://seumenha.ru/aws?utm_term=instagram+alpha+apk+mirror PDF link annotation
    • http://auth02mobility.com/diamond_shop_inc._lewiston_ida2v1e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486981/normal_5fc85d352075f.pdfIn PDF document text
    • http://gulibej.22web.org/adverb_of_time_exercises.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381098/normal_600a8fbeb97f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393898/normal_600d06ffb1ee8.pdfIn PDF document text
    • http://shoplus.info/26910947672louzi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366004/normal_5fe058f37f684.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/xalexojaxipud/midukononakamijidusawo.pdfIn PDF document text
    • https://s3.amazonaws.com/peveziwoguxuzam/kotizubofazozatatu.pdfIn PDF document text
    • http://dixisafujanen.rf.gd/envato_prestashop_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/31971223498.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/view_source_mobile_android.pdfIn PDF document text
    • http://vuropomap.epizy.com/endangered_species_free_worksheets.pdfIn PDF document text
    • http://giguvinelixegol.rf.gd/luboponaguvotuf.pdfIn PDF document text
    • http://tixuxunu.epizy.com/ataca_y_la_alemana_salsa_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/reviews_on_pcr_performance_chip.pdfIn PDF document text
    • http://tarefipiv.rf.gd/40629672714.pdfIn 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_off0000bb47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB47 5232 bytes
SHA-256: fa08daa516bcd7ad9d1fd8a1673ec092aecca3b7363f0b5839ba84effeef850d
font_01_sfnt_off0000cceb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEB 10408 bytes
SHA-256: 093e77b257100ae73cd9f184166f6c9317b1c8238ded4e1820dcfa4af78dd51e

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