Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca9a66b8f224e5b3…

MALICIOUS

PDF

71.3 KB Created: 2021-03-18 15:38:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54eac0d84ecbc7b38a8a0924e8209cce SHA-1: aee11ecaa9b779f8cff4a4e08c907425fee33167 SHA-256: ca9a66b8f224e5b34c8b179cc1a8b065f5851be9cd1611f333f007c83ffd7234
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically indicating a phishing and trojan threat. Heuristics identified an advance-fee scam lure, common in phishing attacks. The embedded URL points to a suspicious domain, likely part of the scam's infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://golowaki.ru/wix?keyword=sloth+games+company
    • https://static.s123-cdn-static.com/uploads/4413120/normal_5feb191564cbb.pdf
    • https://pirowefe.weebly.com/uploads/1/3/4/4/134444143/5021608.pdf
    • https://suzitarux.weebly.com/uploads/1/3/4/6/134683800/186d7c.pdf
    • http://vannabanyavsedela.xyz/printable_dot_journal_pageshx8ac.pdf
    • https://cdn-cms.f-static.net/uploads/4401545/normal_602b4e3c6ed9d.pdf
    • https://cdn-cms.f-static.net/uploads/4500447/normal_6049b7ec1af1e.pdf
    • http://hh666o.site/scorpio_car_racing_simulator_mod_apk934u1.pdf
    • http://copyrightreports.com/rolusanewuserowavujozunmfix.pdf
    • http://znasila.ru/waturoniruhp2dm.pdf
    • http://ch-redirect.icu/34384227768038q.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6103bcc3-a26f-42fb-9c68-c03cbcaddfdb/60464754361.pdf
    • https://s3.amazonaws.com/jalasilunaz/email_signature_templates.pdf
    • http://pubometev.rf.gd/happy_birthday_pics.pdf
    • https://uploads.strikinglycdn.com/files/9f33ca8c-0952-4048-93a7-202c0bf72b0e/what_are_the_different_types_of_health_information_systems.pdf
    • https://uploads.strikinglycdn.com/files/67cffd95-3686-42e0-941c-f38ba0eb12a6/hp_probook_4530s_repair_manual.pdf
    • https://s3.amazonaws.com/purawuma/zekitirov.pdf
    • https://uploads.strikinglycdn.com/files/a2fdf046-dc49-4904-acdd-80da2f5224db/que_es_un_titulo_de_credito_en_mexico.pdf
    • http://jipokogave.epizy.com/certificate_of_conformity_european.pdf
    • http://xuwabofori.epizy.com/movetotepavimi.pdf
    • https://s3.amazonaws.com/xamapebonijos/sky_net_sports_uk_tv_guide.pdf
    • https://s3.amazonaws.com/fosalizuzu/nodejoragonudizilutegin.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d726.bin
cbea283d5a74da224a72f165bd07578bde6f45f2fbe74d57d23899e6ee359c75		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD726 5456 bytes
font_01_sfnt_off0000e9a1.bin
c99f40e3d88a86f4d130b6c633b0dc76f0615ace2d37cad510f68386d30b97d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9A1 11564 bytes

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