Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c484fef1c458906…

MALICIOUS

PDF

39.0 KB Authoring application: LibreOffice
MD5: 7e22259066f3e7d1e56ea42de9f3c970 SHA-1: 0ac26e401f48bee2f43b291854837ba028d0e06a SHA-256: 7c484fef1c458906de9af3ae61cb529d787726a90c4bd49dbbd55d4277129426
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm attack pattern. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 and the ML classifier output further support its malicious nature. The embedded URLs are likely used to redirect users to malicious sites for further exploitation or phishing.

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://movimentomarianobetania.org/uploads/1/3/0/2/130270997/dijadivameje.pdf
    • http://misscamille.fr/uploads/1/3/0/7/130775009/e211e5016c40e9.pdf
    • http://deltaixsecurity.com/uploads/1/3/0/7/130775719/9026125.pdf
    • http://musiccitypetpartners.com/uploads/1/3/0/4/130488295/2766644.pdf
    • http://drdiagnostico.com/uploads/1/3/0/7/130776405/24d6a.pdf
    • http://hottcoffee.fun/uploads/1/3/0/8/130814588/bepasanox.pdf
    • http://naturalcleaningservices4u.com/uploads/1/3/0/7/130740186/d91500.pdf
    • http://hodllife.ca/uploads/1/3/0/7/130775850/c8adb.pdf
    • http://wd-consult.com/uploads/1/3/0/3/130379681/paxogusogawukol-xugagatif.pdf
    • http://milissweetstogo.com/uploads/1/3/0/6/130639535/xasefupigawik.pdf
    • http://referral360network.com/uploads/1/3/0/2/130289355/130289355.html#deep+breathing+and+coughing+exercises+for+copd
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d5b.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D5B 16036 bytes
font_01_sfnt_off00004420.bin
4e885a01ae06bc95926930b90d656f60bf04216c1a5ce2d822771ead9209b8e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4420 7372 bytes

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