Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bb633702f98b066…

MALICIOUS

PDF

72.6 KB Created: 2021-01-10 03:40:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 06349dc0913777e4ee6480ec3cba28df SHA-1: 905f2c757231370a7f0e11d31db2508f5ec9087c SHA-256: 9bb633702f98b066c040ddbd26528b724abffa6526ca0b6fe917c2deeb50bbad
96 Risk Score

Malware Insights

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

This 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 URL, likely intended to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to an "Approving officer guide". No scripts were extracted, but the presence of embedded URLs and the overall detection profile strongly suggest a phishing or credential harvesting attempt.

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://trafficel.ru/aws?utm_term=approving+officer+guide+bc PDF link annotation
    • https://zotolibufu.weebly.com/uploads/1/3/1/0/131069899/344a16d0e69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467945/normal_5fb6a6ac9c13c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456398/normal_5ff7cd60cf3da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452595/normal_5fe85280cf3ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375075/normal_5f8c69697a5ea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407327/normal_5fddcf019943e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463264/normal_5fd9a928e3d86.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/40c1e54.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417037/normal_5fe2064510076.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367644/normal_5fe4212a4f99d.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/fotepopunaj/ny_driver_manual.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE028 5092 bytes
SHA-256: f15e82156cbeb7fb87a4d1b212c40d6b51059c3e4a960e8e7aa97933871f597e
font_01_sfnt_off0000f198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF198 10700 bytes
SHA-256: 4eaa7fc73d8572db32e4133027e6a9ae0b14084a6f85a83ce63b039c96d66c4e