Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff994368662bf487…

MALICIOUS

PDF

33.6 KB Authoring application: Mobipocket Creator
MD5: 2f713bfe5c9a428e76a20f65212e9702 SHA-1: 1c8256495ab004ed8ffb80672493b59b9d3f7353 SHA-256: ff994368662bf4875d0062601689dd13ce009fefc37a1670caedada951a96214
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, indicating a link farm designed to redirect users to potentially malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, consistent with phishing or malware distribution. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://jeffyarger.com/uploads/1/3/0/7/130775142/wurerofowimib.pdf
    • http://hillsgold.org/uploads/1/3/0/5/130551142/1263ffdd70.pdf
    • http://worldarchives.club/uploads/1/3/0/3/130379244/pumaxikomobalum.pdf
    • http://thelordswriter.com/uploads/1/3/0/6/130621643/a575d47fd819.pdf
    • http://mta-sts.mx.downtherabbitholewines.com/uploads/1/3/0/6/130639760/zumej_pexalu_talejapemekaduf_foseg.pdf
    • http://sobrewity.com/uploads/1/3/0/7/130775979/galoje_regowitufujul.pdf
    • http://mackmccullough.com/uploads/1/3/0/7/130775211/jiforekimedov-lorofevavadulor-milozovominaf.pdf
    • http://clevelandschoolofcannabis.com/uploads/1/3/0/6/130603823/vowujobotusirodapi.pdf
    • http://kenicholson.com/uploads/1/3/0/4/130488530/b6a850aa.pdf
    • http://mhfacilities.com/uploads/1/3/0/3/130323362/8270413.pdf
    • http://smbhire.com/uploads/1/3/0/6/130621243/xuvugesuzajiwa.pdf
    • http://katiaponomareva.com/uploads/1/3/0/3/130312937/130312937.html#adobe+after+effects+cs4+templates+free+download
    • http://mhfacilities.com/uploads/1/3/0/3/1303

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c96.bin
22536fa653fc016ad2e9a30df54f2dcc36d13141cc8d3de67fa5c7d3ebd550c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C96 7668 bytes

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