Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9dc86733d4ab3f2…

MALICIOUS

PDF

37.5 KB Authoring application: pdf-parser
MD5: 95195fc4c934b661525d905f848b2d76 SHA-1: df67e8d3d420c1de5715657097621e82fc2f8907 SHA-256: c9dc86733d4ab3f24c21cc2bc1794e82e6831880c866639311510b76caeea6b9
128 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to other PDF files hosted on similar domains, indicating a link farm for SEO manipulation or phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the presence of a visual download button further support a phishing or malicious redirection scheme. The document body, though partially corrupted, suggests a lure related to free software downloads.

Heuristics 4

  • 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
  • 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
  • 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://aromascrips.com/uploads/1/3/0/4/130483799/4060336.pdf
    • http://restoreand.com/uploads/1/3/0/5/130544652/fukixeti.pdf
    • http://kalaman.net/uploads/1/3/0/5/130551464/6c4137a590.pdf
    • http://beachypress.com/uploads/1/3/0/3/130379210/sifudob.pdf
    • http://sea-riders.com/uploads/1/3/0/6/130605080/9100505.pdf
    • http://moderneroticart.com/uploads/1/3/0/6/130639656/385d1.pdf
    • http://keppingerlaw.com/uploads/1/3/0/6/130639331/kexele.pdf
    • http://treeservicemagnoliatx.com/uploads/1/3/0/5/130588153/vufagibesaxemav.pdf
    • http://mypups4u.com/uploads/1/3/0/6/130604195/muxejekazigux.pdf
    • http://samsungrepaircenter.net/uploads/1/3/0/5/130588489/7082813.pdf
    • http://mysoundcollective.com/uploads/1/3/0/7/130775784/130775784.html#excel+to+pdf+converter+software+free+download+full+version+for+windows+8

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001230.bin
7f8cab64cb21f36df9c0675d029860356bd8726d6ea68ec1a083d7f7b7674c02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1230 8276 bytes

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