Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea479645b90de6f9…

MALICIOUS

PDF

69.5 KB Created: 2021-01-02 12:54:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 7245cf2ac1a97a026940617bb5b42069 SHA-1: cf0fd9033ee4a51944dd08673db080fa24cc8ded SHA-256: ea479645b90de6f9b39ec66619ea8f886f17b346f00209c5ca853be11594827d
104 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a domain associated with downloading a driver, which is a common lure for phishing or malware delivery. The presence of a 'download button' heuristic further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • 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/aws?utm_term=avision+fb1000n+scanner+driver PDF link annotation
    • https://varemajog.weebly.com/uploads/1/3/4/5/134585454/sewana.pdfIn PDF document text
    • https://wejakoguxi.weebly.com/uploads/1/3/4/3/134324676/dowukosexamevop.pdfIn PDF document text
    • https://jeruxonoja.weebly.com/uploads/1/3/1/4/131407493/9445534.pdfIn PDF document text
    • https://cdn.sqhk.co/rilixuzewiv/jaifhid/watch_movies_together_online_apple_tv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417834/normal_5f987e285faf8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/611479ed-34f6-498f-a047-9f0ba2489f07/ponunegorofopatererot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/609f06ce-b6cc-4a11-a81b-2adac6cf6fb1/3954646609.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7e328ac-6613-473b-b1a5-4f101bba84f2/mixunejewajamo.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/formatter_code_online.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/xusipulepegopawufijoka.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_off0000d237.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD237 5368 bytes
SHA-256: 28b0083347aeb44d229b2dce50bba780ae19f92257c23a4de52ef3aa65e8baf0
font_01_sfnt_off0000e494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE494 11004 bytes
SHA-256: 145b01a42ddae698e1921eb8135df505f3544b8eff6b721bf841c4689f329766