Malicious PDF — malware analysis report

Static analysis result for SHA-256 5740996e4d9846c5…

MALICIOUS

PDF

42.6 KB Authoring application: OpenOffice Draw
MD5: ec5ba6bd63c7f943d36441afafe9c92c SHA-1: 32681a5d24532624b5c82a35c449e6661e424c17 SHA-256: 5740996e4d9846c5055d62afed23b84c72c958d3217a791a41f074b17f44e592
152 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 documents hosted on various domains. This behavior is indicative of a link farm or a phishing lure designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly support its malicious nature. No scripts were extracted, and the document body text is largely unreadable, but the heuristic firings clearly point to a link distribution attack pattern.

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://innovalprocess.net/uploads/1/3/0/2/130274263/1ed87d92ce1.pdf
    • http://caagroupllc.net/uploads/1/3/0/4/130489143/638270.pdf
    • http://3x1-jeans.com/uploads/1/3/0/6/130604771/kamilom.pdf
    • http://ajointvisionllc.com/uploads/1/3/0/5/130590282/ziwafipisogoziw.pdf
    • http://blackbusinessexpo1.com/uploads/1/3/0/5/130545334/004eda97ad3c.pdf
    • http://planettammy.com/uploads/1/3/0/3/130323281/2095868.pdf
    • http://dgias.pl/uploads/1/3/0/3/130313262/difobe_vovegavidige_bileze.pdf
    • http://ladymahia.com/uploads/1/3/0/2/130272325/femunepewov-fupexopodim-pudizukajezuzid-vupunimunamegi.pdf
    • http://jasonrgenua.ca/uploads/1/3/0/5/130588923/mogugakebugamabobawu.pdf
    • http://themethodmeditation.com/uploads/1/3/0/5/130551405/mitog.pdf
    • http://clearwaterconcerts.org/uploads/1/3/0/3/130323185/130323185.html#ayurvedic+books+in+telugu+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012ad.bin
ffc9ae974f4a67467c01b3ede3ed39712dd670c05456d9de8cb5c5414ed97bca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12AD 8196 bytes

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