Malicious PDF — malware analysis report

Static analysis result for SHA-256 e59ea5b292625f76…

MALICIOUS

PDF

74.4 KB Created: 2021-01-07 11:13:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 34d52ec8e917708ac355d3dbb24624c3 SHA-1: d5c0b4491a11df4f3ba55128a69cee87134f3faf SHA-256: e59ea5b292625f7679d8093c736906b7ec63a637d932a65391b49d2a7e9bdb9d
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan. It contains an embedded URI pointing to 'traffset.ru', which is likely used to redirect the user to a malicious site. The document body is heavily obfuscated, but the presence of the external URI and the ML classifier's high confidence score indicate a malicious intent, likely for phishing or malware delivery.

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://traffset.ru/123?utm_term=maui+jim+stingray+review PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465387/normal_5fe2b7aa1de50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427795/normal_5fad6f4910540.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460980/normal_5fca58ba6aba3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377935/normal_5fa703ddc5760.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368466/normal_5f89c13418873.pdfIn PDF document text
    • https://xumuxurubaxuk.weebly.com/uploads/1/3/4/5/134501003/6533769.pdfIn PDF document text
    • https://cdn.sqhk.co/zifiguwosu/ggi88lM/fegadexo.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/nebewufazodilen.pdfIn PDF document text
    • https://cdn.sqhk.co/pozuwifofub/S194L6F/13538739175.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/Ghhjgif/arma_tactics_demo_android_1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e2c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C1 5308 bytes
SHA-256: 9731fb682235dace36731406c4487ab053dfbf26a7d01d96bcbba1ce3c80f1b4
font_01_sfnt_off0000f4e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4E1 11228 bytes
SHA-256: 4444ddf9935ae55aec86e8cf902e7765e7bb0ef9730e2459d7c5a6972cc79df8

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