Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ec41055a4d64cb0…

MALICIOUS

PDF

39.2 KB Authoring application: ImageMagick
MD5: cf2dc7d52b4131f3abffc7d21ebc6a1b SHA-1: cef1efe1bbcf365af010b69291e5f4e863b44e92 SHA-256: 5ec41055a4d64cb0aff557dccc4a3e4d13aff41edd5c26c8ff0039a6295dd85a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, and exhibits characteristics of a link farm. The document body contains numerous embedded URLs pointing to external PDF files across various domains. The primary attack pattern appears to be directing users to a large number of these external resources, likely for SEO poisoning or to serve as a distribution point for further malicious content.

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://nuvivug.mir-tattoo.ru/uploads/2020/01/28/2585708.pdf
    • http://diskyoto.jp/uploads/1/3/0/2/130288861/3d729.pdf
    • http://jemivam.guarchibao-fatcaps.info/uploads/2020/01/29/49d47dfeec.pdf
    • http://hausparzival.org/uploads/1/3/0/5/130540037/taruju.pdf
    • http://wattsdidier.com/uploads/1/3/0/4/130476313/2500911.pdf
    • https://maduravumiga.weebly.com/uploads/1/3/0/5/130588550/xajabumenerade_pilonepakogazo_dodepebo_divorisimigeda.pdf
    • http://newhavenmo.com/uploads/1/3/0/3/130313673/d2a70.pdf
    • http://qbhomesptyltd.com/uploads/1/3/0/3/130379138/2426215.pdf
    • http://chicagonightlifepass.com/uploads/1/3/0/6/130620628/b8db9cc0.pdf
    • http://meses.festivalweer.com/uploads/2020/01/28/tibusalet.pdf
    • http://solidinvestmentgroupbvba.com/uploads/1/3/0/4/130478831/pefon_wijutekebumase.pdf
    • http://mjrich.net/uploads/1/3/0/6/130605115/45e22a0a.pdf
    • http://ohanaguidance.com/uploads/1/3/0/6/130620483/8946218.pdf
    • http://freetour4you.ru/uploads/2020/01/28/femirunupodozux-lidoragazite-bakusidesirinid.pdf
    • http://davisdesigns307.com/uploads/1/3/0/3/130313346/davolevox_zeganuvu.pdf
    • http://beyondpotential.ca/uploads/1/3/0/4/130476089/b2ba1960e46e053.pdf
    • http://paskiclub.com/uploads/1/3/0/5/130539054/c684c998df.pdf
    • http://nationalriskmanagementgroup.com/uploads/1/3/0/3/130323531/130323531.html#the+bay+gluckstein+bed+sheets

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016c9.bin
697b3efd1d1f8ac14ca44dc4f165692829351d021d30cd50222b2e28cc4a61c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16C9 8992 bytes

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