Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a0ea048fe46e6e3…

MALICIOUS

PDF

68.1 KB Authoring application: PDFedit
MD5: d34a71e350fa83473c63943fe0e01111 SHA-1: b82467c831ffa7fbb224a56ead1105ccf5b0501f SHA-256: 8a0ea048fe46e6e3b9328f0af55ce1bddeeed7f2f83df2dae8776c1025ec476b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: User Execution T1566 Phishing T1566.002 Phishing: Spearphishing Attachment

The PDF file contains a link farm and a social engineering lure to install a browser extension, as indicated by the 'SE_BROWSER_INSTALL_LURE' heuristic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports its malicious nature. The embedded URLs likely serve as part of the distribution or redirection chain for this phishing attempt.

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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 https://fojibero.weebly.com/uploads/1/3/0/6/130604715/b17397c17a00.pdf
    • http://russianair.com/uploads/1/3/0/4/130435654/xagareputexijidemi.pdf
    • http://norgrenairregulators.com/uploads/1/3/0/6/130621531/0eba35b8c4066fd.pdf
    • http://alittlesernity.shop/uploads/1/3/0/6/130603690/pejedefedemo_wumesefalepijup_tovitowazofi_gubajirigekug.pdf
    • http://streamlinenation.net/uploads/1/3/0/6/130639915/dixaxogakada.pdf
    • http://beyondhillco.com/uploads/1/3/0/2/130289458/130289458.html#video++capture+chrome

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00007dae.bin
99a85c0f9eec48228de450e8d9698d5c9da7664668c9aa0d86186748d4c2ca97		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7DAE 21876 bytes
font_00_sfnt_off00001196.bin
420fe824643629262683874dd933a067438e7cf358c616e3ebe5464b921c4253		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1196 10024 bytes
font_01_sfnt_off00007334.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7334 2652 bytes
font_03_sfnt_off0000a1c6.bin
be988c7d9b8c1d3674167e9571f845d7517e3ad99dc6436d2b4dae91c9a3dd03		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1C6 6680 bytes
font_04_sfnt_off0000b21f.bin
f7ee4c17958151e838f34d89c0d33b10231506a32f027164a93d126470f80fb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB21F 13148 bytes

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