Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a8f92e0475ba706…

MALICIOUS

PDF

78.7 KB Created: 2021-05-17 00:29:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 7f833074a0e8e39bb38ddbf135fc0a85 SHA-1: da59544f54d8713087b46c34c403ca0dd52d216a SHA-256: 1a8f92e0475ba706b769f215c0588e594324ba62aed9baa57e17b15fb16eb9b5
96 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 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://xajibur.ru/strik?utm_term=delonghi+oil+heater+timer+not+working PDF link annotation
    • http://4338bacchus.com/duchess_of_malfi_gender_themeazyk1.pdfIn PDF document text
    • https://cdn.sqhk.co/kifuzopeko/pnbjbgj/59232653656.pdfIn PDF document text
    • https://cdn.sqhk.co/kurotevu/jZG2Fje/parumuzixeduzemerebakake.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413966/normal_605cf8395768f.pdfIn PDF document text
    • https://cdn.sqhk.co/gurukemopuge/PxWgf3K/supimitol.pdfIn PDF document text
    • https://cdn.sqhk.co/turaxulefa/bidieH5/england_championship_league_table_standing_2019_20.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464067/normal_606a2fc9f2b2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483082/normal_5ffe98867edcf.pdfIn PDF document text
    • https://cdn.sqhk.co/vipotukivisi/heViihe/kindle_shop_amazon_app_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutesilo/gijbjje/stack_crush_ball_real_money.pdfIn PDF document text
    • https://cdn.sqhk.co/fimegasaz/kgjjiNM/polynesia_adventure_game_walkthrough_frozen.pdfIn PDF document text
    • http://upgrade4me.com/fight_updates_live1tvbt.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzewekafan/zicijhE/lala_ramswaroop_calendar_november_2020.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500208/normal_5fff132c2dbab.pdfIn PDF document text
    • https://cdn.sqhk.co/wuzutuse/bijjhfA/lapiwavejajezaramijaga.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF835 5076 bytes
SHA-256: e7c18dd9f2c6b34311e8a0172cfcda7f9b3ace8d47180bddb4920941f6364587
font_01_sfnt_off00010963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10963 10692 bytes
SHA-256: 9b5f3a27218ad9a808a051bd7043091dc01dd3b5e0a4381b3103e326673b2115