Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8438868f40933cb…

MALICIOUS

PDF

35.3 KB Authoring application: Nitro PDF
MD5: 9139d472af890818efd9e4940f1bf914 SHA-1: b9a5bfce3f436eff078e80c87913ec13b6af8e72 SHA-256: e8438868f40933cb3621e5323f46b058f90f83d9ffb70a26ef519ae06b3d5d96
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm or a phishing lure designed to direct users to potentially malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and traffic redirection nature of this file. No scripts were extracted from this sample.

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://fixedalready.net/uploads/1/3/0/5/130543148/jokodo_zivejigexak_zugiruzotarar_febujifonenixi.pdf
    • http://msblaw.net/uploads/1/3/0/5/130545021/lunujazoloj.pdf
    • http://robertaraye.com/uploads/1/3/0/2/130288554/bofem.pdf
    • http://mapletreemw.com/uploads/1/3/0/7/130739828/8482275.pdf
    • http://rentatek.net/uploads/1/3/0/8/130814728/xunelubid.pdf
    • http://objectrelationsrecords.com/uploads/1/3/0/6/130603941/mesebafepanofog.pdf
    • http://kindlykristenn.com/uploads/1/3/0/2/130272856/1637192.pdf
    • http://godsfamilygodsearth.net/uploads/1/3/0/5/130551363/8059052.pdf
    • http://vishwa-nirmala-dharma.com/uploads/1/3/0/5/130589293/7826046.pdf
    • http://swoapy.com/uploads/1/3/0/6/130604841/4549878.pdf
    • http://digitalip.com.au/uploads/1/3/0/4/130476158/zumuziwib-nujapakukisunik.pdf
    • http://sandmanlogistics.com/uploads/1/3/0/2/130272282/8120195.pdf
    • http://mianduimianshipinqipaiyouxi.br3h.com/uploads/1/3/0/8/130814644/130814644.html#bearing+failure+pictures+skf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000347c.bin
d94c636dcef533d96932ed5d5b7caaf2b09d1c1a0de8edd0312e38c5587d05f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x347C 7072 bytes

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