Malicious PDF — malware analysis report

Static analysis result for SHA-256 e98a0c2ab3d1c1f6…

MALICIOUS

PDF

76.6 KB Created: 2021-03-24 06:11:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1de0e25d3227da29b528655641bb1b92 SHA-1: 5449959b8957c4306ecaca443d3392f566348fc4 SHA-256: e98a0c2ab3d1c1f628272a4fb6f99d66c6475ede6aea68123a67a37f025f3cdf
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 0.9991

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 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://kuzutuzo.ru/wix?keyword=knights+of+pen+and+paper+2+cheats PDF link annotation
    • https://cdn.sqhk.co/vasibejovej/hexJ4jL/4695857370.pdfIn PDF document text
    • https://cdn.sqhk.co/xeviremal/jhQLhdH/lowipa.pdfIn PDF document text
    • https://cdn.sqhk.co/manizamo/igz2gdt/pictoword_level_70-_80_answer_key.pdfIn PDF document text
    • http://nesobaka7.xyz/94086685439m6vc4.pdfIn PDF document text
    • https://cdn.sqhk.co/vutexexukus/TBmR6jh/force_saber_vs_lightsaber.pdfIn PDF document text
    • http://store50off.info/juwobibekipa6.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/e3039b09-3e4a-4228-98d5-e5dbac2ab9e6/sc_drivers_license_status_check.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0a776a6-b85f-488a-aea5-a77adc0db7f5/24210778343.pdfIn PDF document text
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_4594433cda2a4c3d9cfd3d8778d12cf7.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zonivezada/logofapupiwatuwipojefup.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/content_manager_job_description_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65c138ab-5161-4ba5-a876-e804c45a9f13/garmin_etrex_30x_gps_western_europe.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/82150561087.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84b60f80-e338-4d3d-8e42-58a829521e64/peluxifavubujunowatixima.pdfIn PDF document text
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_b1ccd6ca731b418d8c3e80cae4b20fec.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/najubu/dediwesiwata.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/arby_s_menu_nutrition_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b83ee31-c03a-4e6d-bcb2-441642ea6fd8/how_much_does_starbucks_pay_in_new_jersey.pdfIn PDF document text
    • https://s3.amazonaws.com/fusopoxipo/veguxawasomi.pdfIn PDF document text
    • https://e1cd7dcf-8988-4be8-9b1a-722367337987.filesusr.com/ugd/6203b9_33c0a3af27e0463eb1136c9ff2a162d9.pdf?index=trueIn PDF document text
    • https://f110cc6a-49d6-427c-9ab6-a3a4d323b004.filesusr.com/ugd/9e53d4_4a4d6ba557f744b188083597e70f39ac.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dojonuta/latamefepivozofujeve.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/lafozudikadoxegazexeru.pdfIn PDF document text
    • https://b7f5b04e-b247-49a4-9dc0-39f0c843ec09.filesusr.com/ugd/b56f86_b970a9dd8c6c4a4fa627c0bd5e8db092.pdf?index=trueIn 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_off0000eaa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAA4 5488 bytes
SHA-256: 63e42cba0d22585b9673920e382d29a0cb12023991a8723c4d6bc403041a0a58
font_01_sfnt_off0000fd55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD55 11568 bytes
SHA-256: c55bd33befaaf2401d05d407dcd14e4ef150c7daf35929da1e9d4cf65cd61857

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