Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbf969752d3243f4…

MALICIOUS

PDF

74.0 KB Created: 2021-03-24 07:06:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0a1f0fdb623933eb9123320bcccf308f SHA-1: 7a94bcde4eb0e60c5949efad66620b6f3b066b1b SHA-256: fbf969752d3243f4104dc23b5593661029afed9d3d7be4396def4200f4810862
96 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating an external URI, which points to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://soxebez.ru/wix?keyword=best+fitness+inversion+table+manual
    • https://cdn.sqhk.co/gukituzaju/Ugjifih/38146608807.pdf
    • http://xviiivbgz.com/why_is_my_wifi_blinking_orangexajfv.pdf
    • http://jojalipubawil.22web.org/61912816812.pdf
    • https://cdn.sqhk.co/jimavidozeze/fr5zgj7/giwikurifozuwagajonizu.pdf
    • http://xofenejilomoz.iblogger.org/13578414216.pdf
    • http://topfrag.rip/polaladiffwhe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://d4f1f58f-bd44-402a-a4b0-a3aa01e36dbf.filesusr.com/ugd/dffefa_ca99c7d6d8e84275ab3329202e01c224.pdf?index=true
    • http://marivugedada.epizy.com/anualidades_inmediatas.pdf
    • https://uploads.strikinglycdn.com/files/4220ea04-02ce-45aa-8009-648fa36d676f/9274246706.pdf
    • http://sedijinuv.epizy.com/gapekixikem.pdf
    • http://muzeduv.rf.gd/95962299285.pdf
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_457e1afda1f6440d83ab29f2c88cf33f.pdf?index=true
    • http://xodenumaverap.epizy.com/4838977665.pdf
    • https://7f1d4f38-7308-4051-b389-b8ed31312188.filesusr.com/ugd/e948c1_2a14736a63bd4bccaf0975b263dc94db.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3064bbc3-62a8-4e45-90c2-8852f0c6e75e/effective_communication_strategies_in_the_workplace.pdf
    • http://kunasajijujaf.rf.gd/6526241529.pdf
    • https://cb47f074-0476-4434-b381-5672a365cab8.filesusr.com/ugd/c46c8a_5a2163deb85b4c57b2bb9588f2de0087.pdf?index=true
    • https://75a697d3-84f0-44cf-bab9-f05e37020c50.filesusr.com/ugd/7c3584_e2531bb3a42d4ed0a487ece5abbfddb9.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e58e.bin
df7a196d4eee6eda58cf2fa3946a68055df97db8338fdd5327abf37088e37787
pdf-font-stream PDF embedded font (sfnt) at offset 0xE58E 5164 bytes
font_01_sfnt_off0000f713.bin
689741cfa0ade8c30da0f4936140c86e8726cbbe4fbe86acbcb66b9a7a88e84d
pdf-font-stream PDF embedded font (sfnt) at offset 0xF713 10512 bytes