Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea9fb969abbcad05…

MALICIOUS

PDF

74.9 KB Created: 2021-04-06 05:11:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4afd0cf6ebe277c21a1cca381e6345b2 SHA-1: c5e379e7af3b04c5ba68747a4995ddce42b3d351 SHA-256: ea9fb969abbcad05344d21c6c9daa586e3b9f228eb1218c48b5d94c1b77c7b87
156 Risk Score

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 0.9996

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://soxebez.ru/award?keyword=codigo+de+los+caballeros+templarios+de+michoacan+pdf PDF link annotation
    • http://leziwazedo.mypressonline.com/fuwuxafibaloto.pdfIn PDF document text
    • http://fibipowokogo.sportsontheweb.net/pidibipenesawetipiwa.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/goveruduzewoxu/weribelaz.pdfIn PDF document text
    • http://dovivinapex.epizy.com/el_bergsonism.pdfIn PDF document text
    • http://valaweno.rf.gd/income_tax_calculator_ay_2020_21.pdfIn PDF document text
    • https://44eeb0f0-4dc9-4d8b-b3fd-cc7ace98e90e.filesusr.com/ugd/a083a1_c625596fb0fa422bb0b65bc2c6396255.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rebomedug/davovokexiwuvo.pdfIn PDF document text
    • https://3857ddc0-2b33-46ba-b4a8-ebef9b167687.filesusr.com/ugd/5cc0d5_085d0cfd08e84975a9cfa79a06e0bb8a.pdf?index=trueIn PDF document text
    • https://f405dec1-7f90-4f4c-a861-5286f67d0127.filesusr.com/ugd/ab922d_0e6b855ddab0472c93de37f982cd5c06.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/genedesowul/gmail_app_android_does_not_sync.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/gejonaw.pdfIn PDF document text
    • https://1b3e2d6a-0348-4772-9bb2-16e56a761455.filesusr.com/ugd/7bcf02_e88b91612b3448fa867955bdde6c063b.pdf?index=trueIn PDF document text
    • https://781b76d0-895c-4d4e-90f3-491762fad171.filesusr.com/ugd/894952_f4c88fd2f0eb447ea77486c2ceea064d.pdf?index=trueIn PDF document text
    • http://mizapezimoz.rf.gd/coleman_saluspa_inflatable_hot_tub_replacement_pump.pdfIn PDF document text
    • https://7c8f45b7-e058-4e27-bccd-8ee7dcb26900.filesusr.com/ugd/d5cf39_54e9074469d24ce1aef360e249de4919.pdf?index=trueIn PDF document text
    • http://misebupafavo.rf.gd/49110551296.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/android_emulator_camera_controls.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/lalujevam.pdfIn PDF document text
    • http://lopafulobitap.atwebpages.com/market_analysis_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/osrs_beginner_clue_scroll_answers.pdfIn PDF document text
    • https://eb40363d-1d1f-4170-a897-f23f0f433116.filesusr.com/ugd/2a1429_3f64d67d67a34069b491ba5c121d1408.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pazerogasarinu/cafeland_apk_with_cheat.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE576 5612 bytes
SHA-256: ae0b842d572b94328818cee9182732111a518d4ae60c8ae9f24db9221a1e7ae0
font_01_sfnt_off0000f85c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85C 10808 bytes
SHA-256: c4468f330ee113b80b532098295fed1b2c8698a1c17e311e021041e568fc01d7

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