Malicious PDF — malware analysis report

Static analysis result for SHA-256 e769e5ef3b5a60e4…

MALICIOUS

PDF

37.9 KB Authoring application: Nitro PDF
MD5: 7e108da0071a0512a6d46a35e3fafe43 SHA-1: aa6773e2937be6ac39b289a56be426538ae8d5e4 SHA-256: e769e5ef3b5a60e41f80e900d15f273d4cd2332445e54a97da2250a5d224709c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links to other PDF files, a technique commonly used for SEO poisoning or to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. The embedded URLs point to various domains, suggesting a broad distribution effort.

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://californiazion.com/uploads/1/3/0/4/130483993/dizuj.pdf
    • http://userfriendlyfaith.com/uploads/1/3/0/6/130621901/d8f6aed98bf48.pdf
    • http://serdogan.com/uploads/1/3/0/4/130483265/dubopenasaxefiviwar.pdf
    • http://nataliyatodorportfolio.com/uploads/1/3/0/6/130640049/puxizinefaxetopu.pdf
    • http://bsa-sccc-pack301.com/uploads/1/3/0/7/130739301/130739301.html#bass+boosted+music+mix+2017

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001018.bin
48e96c8cc1845d8f7d091124413cb0128b5e2538617bd3d12253bb100679002b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1018 8096 bytes
font_01_sfnt_off00003e0d.bin
c6c28444bcd94379862b6cc7f8cfcdbcdaeb026857ccdb099d87626a561054a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3E0D 16092 bytes
font_02_sfnt_off00005273.bin
dfebbc17fb29809a6caaa48ce5c28f253f7857d43499c05caefee59d385b757f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5273 3836 bytes

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