Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b52f8cd4c903b6b…

MALICIOUS

PDF

35.9 KB Authoring application: Adobe PDF Library 9.0
MD5: 6b2878345e99ea087459e6cf78a39fac SHA-1: 61376bc1ffdcd2276b42a70c202b518c6c02f465 SHA-256: 5b52f8cd4c903b6b8f88d38060eab048d21ca1ca3af34d3c0c06fa754232e60a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or distribution mechanism. ClamAV detected this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', and a machine learning classifier also flagged it as malicious. The document body mentions 'Rdt malaria india' but appears to be heavily obfuscated and contains no clear instructions.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://blsmusic.com/uploads/1/3/0/7/130775280/lulibapamivi_nenofaw_minulenodawofur.pdf
    • http://www.rhdesignstudio.com.au/uploads/1/3/0/4/130435833/5604431.pdf
    • http://jewelrywithin.com/uploads/1/3/0/8/130813042/34fbcfaa408.pdf
    • http://growingeducator.com/uploads/1/3/0/6/130604543/13b3f7f6e54ac3.pdf
    • http://hucklebean.com/uploads/1/3/0/8/130873771/sajumari-funowoxuzez-wotunudajofip-gijubadiwu.pdf
    • http://davincihelp.com/uploads/1/3/0/2/130270892/lubixuloriva_piloguz_lekiwebezo_xabilinomosamor.pdf
    • http://topephoto.com/uploads/1/3/0/7/130775271/b7f5db8a7.pdf
    • http://caindianstudies.org/uploads/1/3/0/9/130969449/gagakebix.pdf
    • http://mail.carmelbayhoa.com/uploads/1/3/0/4/130436226/zisumomabolewod_wovuderalosibe_bowewozikoxoki.pdf
    • http://livairsoftxtreme.com/uploads/1/3/0/7/130740045/372958.pdf
    • http://houstonasta.voyagerwebsites.com/uploads/1/3/0/6/130639360/130639360.html#rdt+malaria+india

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003624.bin
7b539a322762295aa13f30229617ee6311724c1c06fef1ed3c112cef831361e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3624 7964 bytes

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