Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f62ce7b2784467c…

MALICIOUS

PDF

56.4 KB Authoring application: Serif PagePlus
MD5: 79eab87007cf1ad52b6493ce113e39e3 SHA-1: bffb6f7c1fb40be896dbd2c42a670ccf02f21954 SHA-256: 7f62ce7b2784467cb20661fbd399e6dad2f7c59d6a7009aa41797241a03f06a5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many of which point to other PDF files, indicating a link farm designed for SEO manipulation or to distribute malicious content. The presence of a 'download button' heuristic further suggests a lure to download additional malicious files. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' confirms the malicious nature. While no scripts were explicitly extracted, the structure and heuristics point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://danscentrumnorr.com/uploads/1/3/0/6/130621000/609f53.pdf
    • http://contractorwholesale.com/uploads/1/3/0/4/130490115/dafuvumala.pdf
    • http://crosleyoutdoorproducts.com/uploads/1/3/0/6/130604777/3776446.pdf
    • http://ninapacker.weebly.com/uploads/1/3/0/6/130639977/7206350.pdf
    • http://celestialsciencearomatherapy.com/uploads/1/3/0/6/130621488/3683189.pdf
    • http://asociacionperiodistaspr.org/uploads/1/3/0/3/130323552/130323552.html#sample+communications+strategy+template
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001310.bin
d94041148230fbb52184722aa34be8ae6cdf344eb9f9fbc1b2f168735c3fd684		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1310 8920 bytes
font_01_sfnt_off00009645.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9645 16268 bytes

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