Malicious PDF — malware analysis report

Static analysis result for SHA-256 327d000743936677…

MALICIOUS

PDF

76.6 KB Created: 2020-11-19 16:34:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80c0e93e71b1b423d7b97696b46e4cc5 SHA-1: ec838c20ab96d6feb26b2f869abbb0a7dd1b376f SHA-256: 327d000743936677fb3defe101c8043f386eff50a4dea836d6f268b91a08547a
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including PDF_SEO_LINK_FARM and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'traffnew.ru' suggests an attempt to redirect the user to a malicious download site. The ClamAV detection further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffnew.ru/123?utm_term=uc+browser+latest+version+mod+apk+download
    • https://cdn-cms.f-static.net/uploads/4376856/normal_5f89c04394adc.pdf
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5fa327f938fdd.pdf
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/3cb113af6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/dc4b8b95-3d87-4394-9517-ae6405648e2b/39077861559.pdf
    • https://uploads.strikinglycdn.com/files/ddfd1692-17f3-4b38-b49d-acc4964a60df/exercicios_resolvidos_sobre_problema.pdf
    • https://uploads.strikinglycdn.com/files/a6200fc6-3eb7-498a-b972-2f0e5ce1f7df/kubobovadusosole.pdf
    • https://s3.amazonaws.com/suximawo/north_haven_school_board.pdf
    • https://uploads.strikinglycdn.com/files/24e8b48e-6029-4fdc-9129-5b8ca31b320a/path_of_exile_unique_armor.pdf
    • https://uploads.strikinglycdn.com/files/69a2a05a-f408-4c19-b9f7-daab69c2ac21/870872303.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c715.bin
05f0cb79d6f04fc07a9960414cc3e86e31153aaaa8a956cb0c0094a2652cbf03		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC715 5356 bytes
font_01_sfnt_off0000d933.bin
4e6c15c1b3bef0b1d20100576c33b47db42c2a404f0509105a9e25b059f52ed9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD933 11280 bytes
font_02_sfnt_off0000ff4c.bin
366a784db0d8c43dced5fa07309d8a0a4313a7083541e37c92380c80a8d935fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4C 16452 bytes
font_03_sfnt_off0001155d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1155D 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.