Malicious PDF — malware analysis report

Static analysis result for SHA-256 de87f878cbaeb28a…

MALICIOUS

PDF

52.6 KB Authoring application: Serif PagePlus
MD5: 0a64aeea78e748464d70d5a8d86bcde4 SHA-1: 24990abb8f69f67424e4b800756995dd56b7da27 SHA-256: de87f878cbaeb28a0e4a7b2f84b1173263ab3277577c42f483c0ccd1b6607669
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF files, a technique commonly used for SEO poisoning or to redirect users to malicious sites. The document body, while containing some readable text about autism, is heavily obfuscated and likely serves as a lure. The ClamAV detection and ML classifier strongly indicate malicious intent, consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://houseofgold.net/uploads/1/3/0/5/130539979/275a0a54.pdf
    • http://doicontrol.com/uploads/1/3/0/4/130476619/6638b3d5b79150.pdf
    • http://lejawazet.vipiski-besplatno16.icu/uploads/2020/01/28/3607095.pdf
    • http://nivafoundation.com/uploads/1/3/0/5/130546040/dejola_lakivudoj.pdf
    • http://clamagorereef.com/uploads/1/3/0/2/130274338/wusepejezuzufun-kusubuda.pdf
    • https://tuzoniwaku.weebly.com/uploads/1/3/0/2/130271137/9418662.pdf
    • http://vubixabi.e-loveparis.com/uploads/2020/01/28/22909c8c.pdf
    • http://kreativekidsworld.com/uploads/1/3/0/4/130476243/130476243.html#diferen%C3%A7a+entre+autismo+de+alto+funcionamento+e+asperger

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010fc.bin
64ebd75988a7bdb29816c44e444cb0d77167b6f75f5be194d66642e81f9625fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FC 13044 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.