Malicious PDF — malware analysis report

Static analysis result for SHA-256 c713864959693362…

MALICIOUS

PDF

71.3 KB Created: 2021-01-20 00:21:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9a6c938f5aa3623a2d163f2f4352a169 SHA-1: d65050dac49da0bc6db1c9e7bdd8b0fa225c6b80 SHA-256: c71386495969336271a2ba2c00b4114dd588c337350acdf27158e2db6686ce88
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to deliver a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a 'lease extension addendum'.

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://traffset.ru/123?utm_term=lease+extension+addendum+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381094/normal_5f8b4e40eafcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474985/normal_5fd8af5c7a7e2.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxogatuv/2ghDOih/forward_linear_compensator.pdfIn PDF document text
    • https://site-1167931.mozfiles.com/files/1167931/craigslist_denver_free.pdfIn PDF document text
    • https://cdn.sqhk.co/bomemenun/bZigtih/minecraft_dungeons_ps4_game.pdfIn PDF document text
    • https://cdn.sqhk.co/punipopi/cdYDHlM/juwenafijuzasawivawudo.pdfIn PDF document text
    • https://site-1166618.mozfiles.com/files/1166618/information_security_or_cyber_security.pdfIn PDF document text
    • https://cdn.sqhk.co/jafetegupam/TYiSfna/dining_room_chairs_near_me.pdfIn PDF document text
    • https://site-1177122.mozfiles.com/files/1177122/wimarupo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371272/normal_5fa2bdf549402.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369487/normal_5f8f3427ebfd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501632/normal_5fb9bafa34163.pdfIn PDF document text
    • https://cdn.sqhk.co/tadawatimi/jajfZgg/tidibakew.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/leguvefu/6915263317.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/angamaly_weather_report_today.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/eyeball_anatomy_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/87476218204.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_off0000dd82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD82 5068 bytes
SHA-256: 4e16c7de58976b481b75d35e9c293e1c0d10a3c592baeb352a7d4cc601a563a9
font_01_sfnt_off0000eeba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBA 9752 bytes
SHA-256: 601dd348ae8901ef1cc3f5f8e91e87f37c09e98ae8b30505f491e31367d559b5

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