Malicious PDF — malware analysis report

Static analysis result for SHA-256 3293466931dadcd3…

MALICIOUS

PDF

45.5 KB Authoring application: GIMP
MD5: 846bccdf531beafb6bb930205b3e3ad5 SHA-1: e6d7f18a5952b895e4ae4651793cc2aad3f3d1d0 SHA-256: 3293466931dadcd3560c6919615d53a5a7547944ae4c56c4055f59b05cf2ce2e
120 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a PDF_SEO_LINK_FARM heuristic, indicating a large number of external links within the document. The primary malicious URL identified is http://moveupwithus.net/uploads/1/3/0/4/130436122/7543511.pdf. The document body contains garbled text and references to 'GIMP' and 'Hemiacetal aldehyde equilibrium', which appear to be decoys or unrelated content.

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://moveupwithus.net/uploads/1/3/0/4/130436122/7543511.pdf
    • https://matebugav.weebly.com/uploads/1/3/0/4/130477468/d0b41b.pdf
    • https://levoluxab.weebly.com/uploads/1/3/0/4/130436339/pitulufup-pepapukituw-nomon.pdf
    • http://justgreatcareers.com/uploads/1/3/0/6/130621882/fudogevenimetox.pdf
    • https://gamusaxujime.weebly.com/uploads/1/3/0/2/130288421/eed1d68e56.pdf
    • http://mm93.net/uploads/1/3/0/2/130287454/130287454.html#hemiacetal+aldehyde+equilibrium

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010c6.bin
164a3bcd9309628272a6cfb8d47142163ba7ab348aa7ccd3b03f5d3f6fa5d153		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C6 8452 bytes
font_01_sfnt_off000075dc.bin
cc3af786467082736cdd105fd2e6808899482ff6d7b5d52677dd54756cdf8688		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75DC 3220 bytes

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