Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c6944ad9cfefb8c…

MALICIOUS

PDF

52.5 KB Authoring application: PDF Studio
MD5: 62cc81e3813eb5c2ad8c05d24e14acd8 SHA-1: 63e30b55cc5db59d31b8dd13637532b9442f6e48 SHA-256: 5c6944ad9cfefb8c888318a4d1ce63eb0bfdd712481518033496b1db9e9d3308
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs, identified as a link farm, which is a common technique for distributing malicious content or conducting phishing attacks. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the sheer volume of outbound links suggests a primary function of redirecting users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ntkdomains.com/uploads/1/3/0/2/130291809/8e59cdd830916.pdf
    • http://capdisttutor.com/uploads/1/3/0/6/130620666/juxenexuxixapabun.pdf
    • http://esportsfloors.com/uploads/1/3/0/7/130776174/zubezopixasifim-nanukeritoj.pdf
    • http://libertodos.org/uploads/1/3/0/4/130483527/komijejivurafa-zelufid-sidenifip-tumepimuf.pdf
    • http://sermotel.com/uploads/1/3/0/7/130739952/rabelo.pdf
    • http://verifiedoverviws.com/uploads/1/3/0/6/130639511/7ed003d.pdf
    • http://mrulmersmathunit.com/uploads/1/3/0/5/130547812/ed246.pdf
    • http://cyclebavaria.com/uploads/1/3/0/5/130588772/60883af345a2.pdf
    • http://handheldnation.com/uploads/1/3/0/3/130313718/156262.pdf
    • http://mrreynoldsmathclass.com/uploads/1/3/0/3/130313148/7625125.pdf
    • http://www.mfglobe.com/uploads/1/3/0/9/130969283/9913955.pdf
    • http://royalematch.com/uploads/1/3/0/7/130739680/8415751.pdf
    • http://dogasart.com/uploads/1/3/0/8/130814237/lobuxe.pdf
    • http://clearwaterguttercleaners.com/uploads/1/3/0/3/130312920/4461520.pdf
    • http://www.agosoutheastblog.com/uploads/1/3/0/6/130639268/nawezigexa-revofiluxoreta-ruxif.pdf
    • http://icrm2019.org/uploads/1/3/0/4/130436441/f08c01d073c9723.pdf
    • http://azaharaong.com/uploads/1/3/0/6/130605275/nikowuj.pdf
    • http://virtualstreetcorners.com/uploads/1/3/0/8/130873791/ridizukuzaxiwetinad.pdf
    • http://www.lipsticklovelies.com/uploads/1/3/0/7/130740110/donolotuvoligab.pdf
    • http://mylocalcbdstores.com/uploads/1/3/0/2/130289019/ab18994.pdf
    • http://livingfashions.net/uploads/1/3/0/7/130739632/nisogokosojo.pdf
    • http://fayettevilleveterinarian.com/uploads/1/3/0/6/130639698/3437823.pdf
    • http://narrativecounseling.com/uploads/1/3/0/5/130590589/563720.pdf
    • http://moodstruk.com/uploads/1/3/0/2/130272501/loxopore.pdf
    • http://90w9p.salon225.com/uploads/1/3/0/4/130435518/130435518.html#differentiation+of+enterobacteriaceae+by+biochemical+tests+chart
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004fc9.bin
40fab762644e3adfe55ac3dcd7a8914f7a5008714315f14cef835d06356b717d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC9 2800 bytes
font_01_sfnt_off00005ac7.bin
0934c276ff61e80f4c95346f413557c9220f237f8c9605768e6627d075993b19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC7 3240 bytes
font_02_sfnt_off0000689d.bin
c744286ad834b90b5f83eba7d6678367f9ebe06026e1f795d9993f358db4e749		 pdf-font-stream PDF embedded font (sfnt) at offset 0x689D 8500 bytes

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