Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceca6aa4deb0dbcf…

MALICIOUS

PDF

90.4 KB Created: 2021-02-16 07:11:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: a7fad118f93f6206f97f44be59e898e5 SHA-1: 59783d9d983ba79cc6fcb46a8d4e35b81272e13d SHA-256: ceca6aa4deb0dbcf53b0cdf907656c1c421c34512d82353d7371a6abe9450744
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a URL that appears to be a lure, likely designed to trick users into downloading further malware or engaging in phishing activities. The document body, though heavily obfuscated, suggests a keyword search result for a game, reinforcing the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/wix?keyword=superhot+miami+hotline+unblocked+66 PDF link annotation
    • http://clipshd.design/jazz_super_4g_weekly_packagessdbs7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485450/normal_5fe2436915303.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410433/normal_5fc9d1c8726cc.pdfIn PDF document text
    • http://zdorovienashevse.xyz/rpg_android_offline_mod9lh5m.pdfIn PDF document text
    • https://cdn.sqhk.co/wapuwozelob/iYkg4bc/52596455922.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389571/normal_6029cb0a13fd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474998/normal_6029ee881bb78.pdfIn PDF document text
    • http://tihefers.online/animal_farm_activities_answersg2deb.pdfIn PDF document text
    • https://cdn.sqhk.co/gikunixa/jRzTjdW/ninja_awesome_apk_downloader.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/banula/25606420630.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/24214492258.pdfIn PDF document text
    • https://s3.amazonaws.com/novifamigot/bootstrap_responsive_theme.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11349 6440 bytes
SHA-256: 629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e
font_01_sfnt_off0001233d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1233D 5596 bytes
SHA-256: 62c2ba92d75a9aa990241a73302399604fbf434f2695375ca05be062a76dfed3
font_02_sfnt_off0001360d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1360D 11272 bytes
SHA-256: 11241a38c3d8e22a102fc3685efd7437b86f4d3e27167cf469122a784db58766

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