Malicious PDF — malware analysis report

Static analysis result for SHA-256 5946157e122185e5…

MALICIOUS

PDF

154.5 KB Created: 2020-12-19 00:49:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71b38e4f91fb81ac796060e51a945d8f SHA-1: 7143d39e1c8ca28a66aaf21611601a2d2510b287 SHA-256: 5946157e122185e563f8fd9104ab69dd89167a7136e1235c9594ad163c72408b
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 suspicious domain, which is likely used to deliver a secondary payload or conduct phishing. No scripts were extracted, but the presence of the malicious URL is a strong indicator of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://trafficel.ru/strik?utm_term=zhuangzi+basic+writings+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static1.squarespace.com/static/5fc64e9b2e537a05ef2de0c9/t/5fd0c4eb2f29925fbb56e4be/1607517419256/shadowlands_alchemy_recipes.pdf
    • https://static1.squarespace.com/static/5fc4fc978ef7301f8b2b2885/t/5fd60c8396ed101a3e3684aa/1607863428626/movies_apps_for_laptop.pdf
    • https://s3.amazonaws.com/memul/xusazufulavemizogime.pdf
    • https://s3.amazonaws.com/rovuweraja/carlyle_lake_illinois_fishing_report.pdf
    • https://s3.amazonaws.com/degisapemifa/60846674432.pdf
    • https://static1.squarespace.com/static/5fc00a03c6229360eca839ab/t/5fce3404d336b863f0ecde9b/1607349253075/rc_helicopter_ar_download.pdf
    • https://static1.squarespace.com/static/5fc0eb79e5c7695ca99bb922/t/5fc12ae13485235c86f0a367/1606494947145/27139644566.pdf
    • https://s3.amazonaws.com/belapawerezuju/viwuxurapopalunuxamawof.pdf
    • https://s3.amazonaws.com/jebupofedijakuk/44717673765.pdf
    • https://static1.squarespace.com/static/5fc1858bf7cf8c75402f5531/t/5fc9c0ca6a94db17e49060de/1607057619617/88359537305.pdf
    • https://static1.squarespace.com/static/5fc4ec032cf09257bd856c41/t/5fd6c0b5102ca46975f1e4b4/1607909558169/read_theory_answers_summer_rain.pdf
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf288ef3361272aeb09a2/1606218376696/samurai_high_school_episode_1.pdf
    • https://uploads.strikinglycdn.com/files/0519360f-3a07-49a6-9ed7-78377e0865c4/5466226206.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000141f5.bin
ad54470da159178ff01ddba73bb25c157668998ec629c8a00f29885cfe567555
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x141F5 73268 bytes
font_01_sfnt_off00021a90.bin
93dd1f4023f40cf42aa7d4aaa5234849a2115caf8b29d250c071b054849f08e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x21A90 5624 bytes
font_02_sfnt_off00022dbd.bin
ca90884cf2a029ec99f7c42eaea1ccd4f06751d408d81a95b2de3451ef46ec38
pdf-font-stream PDF embedded font (sfnt) at offset 0x22DBD 16628 bytes