Malicious PDF — malware analysis report

Static analysis result for SHA-256 d34f7f2e5fcbb533…

MALICIOUS

PDF

36.6 KB Authoring application: Serif PagePlus
MD5: 752021538f27281a156cdb62e3de721a SHA-1: f710fe7e9e2d7fa0b8c8e4aa605570c5d7f4a78d SHA-256: d34f7f2e5fcbb533417c838760e7b068f1630dd182c723b93d3c38ec13ec9924
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of external links to other PDF files hosted across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection. The embedded URLs are the primary indicators of compromise, pointing to a network of potentially malicious documents.

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://emilytiberio.com/uploads/1/3/0/6/130620767/9594d85d0e.pdf
    • http://oalkadi.com/uploads/1/3/0/4/130489410/dolim-kanozujijuma.pdf
    • http://alextindall.net/uploads/1/3/0/4/130435821/tisajok.pdf
    • http://bestcheaptrips.net/uploads/1/3/0/7/130739007/8ac131fd.pdf
    • http://tastephiladelphia.net/uploads/1/3/0/7/130775304/pifadu-julujili-faziwuwab.pdf
    • http://nbarmichigan.com/uploads/1/3/0/4/130488847/gifixe.pdf
    • http://mickfarm.com/uploads/1/3/0/7/130776340/gasigepamezazom-bukufufazikuba.pdf
    • http://nurtureministries.com/uploads/1/3/0/4/130483981/7118292.pdf
    • http://www.mjmhealthcarestaffingllc.com/uploads/1/3/0/6/130639181/vodajotixok.pdf
    • http://raghavmehta.com/uploads/1/3/0/2/130272905/welomunepo.pdf
    • http://54north.info/uploads/1/3/0/5/130588191/lupudigulopa-mogit.pdf
    • http://alliumbatam-v1.devsite-1.com/uploads/1/3/0/5/130539102/130539102.html#polar+form+into+rectangular+form

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c76.bin
db056d6b75001de5db1a3468c5d064d74740f4b0d9fc0843f21179ce511eb003		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C76 2852 bytes
font_01_sfnt_off000038f4.bin
fad04ddae1db4ac92c0d3d097148f31d72edeccbcbff50a017c03adb5776cde7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x38F4 7576 bytes

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