Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5063114e55ad820…

MALICIOUS

PDF

44.6 KB Authoring application: Soda PDF
MD5: d0c4d06ec68cb048915a34383b3b04ba SHA-1: 387e2e983e4fc96f042916992211b2e6e293d5fd SHA-256: d5063114e55ad820f4aef5698914f8964846b7cfeb4cb6b7faf393a5e3f8cb4d
150 Risk Score

Malware Insights

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

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. ClamAV and ML classifiers also flagged this file as malicious, specifically as a phishing or traffic redirection tool. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://kerrydavies.net/uploads/1/3/0/5/130588304/1517447.pdf
    • http://twosistersdips.com/uploads/1/3/0/2/130289543/1102802.pdf
    • http://damngoodgolf.com/uploads/1/3/0/6/130621579/pakono.pdf
    • http://oaxhealth.com/uploads/1/3/0/3/130323113/vugemud.pdf
    • http://umrcsalem.org/uploads/1/3/0/6/130639400/tadimu-gesegu-torifibanubota-xopagozi.pdf
    • http://michaelmkrueger.net/uploads/1/3/0/5/130545633/005601c.pdf
    • http://donaldokie.org/uploads/1/3/0/6/130620486/1655701.pdf
    • http://care-store.ru/uploads/2020/01/29/3591420.pdf
    • http://stokesed508webpage.com/uploads/1/3/0/5/130589460/130589460.html#patellar+tendon+acl+reconstruction+vs+hamstring

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011ae.bin
6bcf0287493bc3bf4ab6876e69c4227e6bb4d4b1e4ea53a04bb3279039b06b21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE 8652 bytes
font_01_sfnt_off00006868.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6868 16036 bytes

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