Malicious PDF — malware analysis report

Static analysis result for SHA-256 f263ff4ad751f89a…

MALICIOUS

PDF

88.3 KB Created: 2021-03-15 00:50:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: cb8d7975e4aeba1d2bc80af0f9fb9776 SHA-1: 8e9e3f34eab41e83d84184fe64017dd4cfc1cf75 SHA-256: f263ff4ad751f89a0fb3265b680d1250e15967f58c653df1279ea0cc9080af4a
96 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 external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://dugedepap.ru/123?utm_term=aleph+borges+pdf+english PDF link annotation
    • http://xefakuwejufo.iblogger.org/fcb_logo_wallpaper_hd.pdfIn PDF document text
    • http://avtoshkola-region26.ru/camry_xse_red_interior_price0r6dv.pdfIn PDF document text
    • http://putifid.iblogger.org/drinkwell_original_pet_fountain_reviews.pdfIn PDF document text
    • http://vk-settings-change.online/awm_pubg_soundhoblt.pdfIn PDF document text
    • http://help-igcopyright.xyz/90859495241iyrhs.pdfIn PDF document text
    • http://uber-global.com/ximikuzutaripebamoridexehwbag.pdfIn PDF document text
    • http://instapodarok365.site/jezerakasukuzuvumoragu3xbk5.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/jizubisetebof/80884232364.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/garmin_forerunner_405_battery_life.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/97595256663.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/11063658185.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/96385705989.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/ram_1500_towing_capacity_2015.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2528e89f-2245-4e67-83ef-e75457971a56/natogage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57e5abce-b617-4f9d-976c-31c16110a38f/arris_tg862_modem_factory_reset.pdfIn PDF document text
    • https://s3.amazonaws.com/jimugivos/70329299624.pdfIn PDF document text
    • https://s3.amazonaws.com/jizubisetebof/amazing_grace_citizens.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9f8ddfd-463e-4000-80e2-cd2398d9fc79/where_to_donate_used_furniture_in_orange_county_ca.pdfIn PDF document text
    • http://kinutumuzikuji.epizy.com/wofukirafidugajeduduvepel.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011b11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B11 5220 bytes
SHA-256: 4fdd46b494fb39b773e9014e42ea1f9952de5b15fcaed1afca8189597c60cd20
font_01_sfnt_off00012cca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CCA 11576 bytes
SHA-256: 6b55c88425ac5a87a54bc860c52f1fbdd3c6282aa020f1be1bc909b51c16b1a4

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