Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d9a34dd63add9d7…

MALICIOUS

PDF

36.0 KB Authoring application: PDF Studio
MD5: f598affeb4a974e574d85fcfde85f9a8 SHA-1: 3176bba433f96593db091af190b163bf82aaf918 SHA-256: 1d9a34dd63add9d7898b04a8a5d626c6dd71567f5227a91fcc4837d453bb1f56
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO poisoning or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure for downloading Adobe Acrobat Reader, which is a common pretext for phishing or malware distribution.

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://sojusurvivor.com/uploads/1/3/0/6/130639835/lirag_fidagote_zepun.pdf
    • http://mwellproductions.com/uploads/1/3/0/2/130270863/juvawik.pdf
    • http://wcmcphailhomeinspections.com/uploads/1/3/0/5/130589320/841070.pdf
    • http://getpatterned.com/uploads/1/3/0/4/130483204/gizimasenodizis.pdf
    • http://iconictoast.com/uploads/1/3/0/7/130739697/800a6a0800.pdf
    • http://noselodeacualquiera.com/uploads/1/3/0/7/130776166/48f9c03.pdf
    • http://nhtmedia.net/uploads/1/3/0/6/130639017/ba1cc1e0f6.pdf
    • http://wastedtalentdesign.com/uploads/1/3/0/2/130287533/8a4edb.pdf
    • http://mbyj.net/uploads/1/3/0/6/130621098/2327767.pdf
    • http://mountainofagents.com/uploads/1/3/0/6/130620869/e88bf1598bd.pdf
    • http://taylorlench.com/uploads/1/3/0/5/130551324/jutew-miralokifa-poparew-fukuwemuv.pdf
    • http://meyerpaintingcompany.com/uploads/1/3/0/5/130551287/gomufudavuwano_makuvexexelabaw_furewodu_wukejareruj.pdf
    • http://moorelaughing.com/uploads/1/3/0/5/130542829/juvakixamukov.pdf
    • http://pakfitness.ca/uploads/1/3/0/4/130478819/2322953.pdf
    • http://nguyentandung.net/uploads/1/3/0/4/130476778/8723025.pdf
    • http://miseniorcenters.com/uploads/1/3/0/7/130776582/jepizobopekam.pdf
    • http://sistereducator.com/uploads/1/3/0/4/130483447/jined.pdf
    • http://dunaecrenwelge.com/uploads/1/3/0/7/130775698/fesofifazu.pdf
    • http://bamabreddoodles.net/uploads/1/3/0/6/130604552/130604552.html#adobe+acrobat+reader+professional+10+free+download+full+version
    • http://mbyj.net/uploads/1/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e64.bin
3758bad2d52fd1c71079d4865f6a0361e675043e57ff58d852d9c8e4640e3a84		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E64 8184 bytes

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