Malicious PDF — malware analysis report

Static analysis result for SHA-256 d701cbf5a1257307…

MALICIOUS

PDF

94.1 KB Authoring application: SWFTools
MD5: 9d4dbcfcba5e2a0749e3ce4f9e3497bf SHA-1: 7bbe70de99868db4ecc29623d1e01138889f083b SHA-256: d701cbf5a1257307de338160127c77b6cc2974b660e5210996500a5850c49d54
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further support the malicious nature of this file. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 3

  • 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.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://www.wishfulvintage.com/uploads/1/3/0/6/130604737/6105644.pdf
    • http://yenisiteniz.com/uploads/1/3/0/4/130435547/gapitotutiwibe.pdf
    • http://noble-contracting.com/uploads/1/3/0/4/130488417/347d6881.pdf
    • http://www.risinghopefoundation.net/uploads/1/3/0/2/130272388/liwolorewifonokuneg.pdf
    • http://drakepaintingllc.com/uploads/1/3/0/5/130539912/laxago.pdf
    • http://namastejoyfulrecovery.solutions/uploads/1/3/0/4/130435839/5ff70.pdf
    • http://humansforclimate.org/uploads/1/3/0/5/130551064/3064195.pdf
    • http://yukieueda.com/uploads/1/3/0/9/130969599/wevawodoto.pdf
    • http://www.anchor-presbyterian.org/uploads/1/3/0/6/130621461/9709799.pdf
    • http://kaichillc.com/uploads/1/3/0/5/130588670/695f248.pdf
    • http://cpanel.valleybookstore.com/uploads/1/3/0/6/130621456/e13e965fa.pdf
    • http://bet365touzhu.br3h.com/uploads/1/3/0/9/130969211/130969211.html#ideology+of+pakistan+and+two+nation+theory+pdf

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off000057b8.bin
b6afe8179a90ed1a149322b14996bf254900c2489c06ca690357306c24476043		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x57B8 19952 bytes
font_01_sfnt_off00007ac8.bin
6d46ac77775e1b6a709d72fa56931439ce8b0a7b01579b90ecabadb7404c6203		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC8 9632 bytes
font_02_sfnt_off000138b1.bin
200d38861918360c12bb6d9d60e50503e710f4e1bebb41ec3c7363efd7a2c60d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x138B1 2720 bytes

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