Malicious PDF — malware analysis report

Static analysis result for SHA-256 360023be924ac878…

MALICIOUS

PDF

225.0 KB Created: 2021-02-06 07:47:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f1e11b52a0bb576442a7a7749071a738 SHA-1: 97442b21c79a3c2a6783024cc0cbcf7129c850ed SHA-256: 360023be924ac8784a3313f96237878d46135b08423bc926a095ecfd6d1dae0e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely part of a phishing or credential harvesting campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to 'anaesthesia books pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9851

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://baarspo.ru/wb?keyword=anaesthesia%20books%20pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4385010/normal_5feb946d0f8aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454056/normal_5fd6ca2e02f1c.pdfIn PDF document text
    • https://xuvelufuxilo.weebly.com/uploads/1/3/5/3/135387868/xijenel.pdfIn PDF document text
    • https://keduwiwisa.weebly.com/uploads/1/3/4/4/134486116/susavefofofisilodi.pdfIn PDF document text
    • https://wipukanutunuk.weebly.com/uploads/1/3/1/4/131437017/e934990df.pdfIn PDF document text
    • http://hotloveme.online/33622396550h1eo6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390092/normal_5ff23afe3908b.pdfIn PDF document text
    • https://lunidopufakim.weebly.com/uploads/1/3/4/4/134482460/028ac7610.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451210/normal_601c987ed45aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403804/normal_5ff97e3b1899b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/gisul.pdfIn PDF document text
    • http://xofafatererowu.rf.gd/chicken_dance_werner_thomas_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/matt_jewellery_design_templates.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000331a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x331A9 4984 bytes
SHA-256: e2456713beb942a8ec204b6d2f38111adb6343aa28ce7520ded5d5d3ca89f8f9
font_01_sfnt_off00034284.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34284 10876 bytes
SHA-256: 3cfa5ef8f7326e6fa69cff8f2b63c760bb85cc275383e6975f31f814f58e9600
font_02_sfnt_off0003677e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3677E 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230