Malicious PDF — malware analysis report

Static analysis result for SHA-256 372d94831c4988d6…

MALICIOUS

PDF

50.6 KB Authoring application: Smallpdf Desktop
MD5: 7a3e99c1bab7a00c7993d24683df9433 SHA-1: 9cdbeee50b6ef77fa72fc9dcd5d33eb0f02f41e3 SHA-256: 372d94831c4988d6949c98e76e7c28f6824751ddd5f9930e5c898bde89daf92c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. The document body, though truncated, mentions 'Ielts 9 test 2 reading answer key', suggesting a lure to trick users into accessing potentially harmful content disguised as legitimate study material.

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://fuzzlab.org/uploads/1/3/0/5/130543093/5323022.pdf
    • http://pugetsoundbfw.com/uploads/1/3/0/6/130620393/1b1a5.pdf
    • http://karinaterrazas.com/uploads/1/3/0/7/130738885/7156839.pdf
    • http://5thousandcleaningservices.ca/uploads/1/3/0/6/130603858/7960114.pdf
    • http://msjohnsonscienceclass.com/uploads/1/3/0/4/130476317/5688245.pdf
    • http://nimatennis.com.au/uploads/1/3/0/5/130538840/8040913.pdf
    • http://doeverythingwithgrace.com/uploads/1/3/0/4/130476492/1824487.pdf
    • http://talesfromthedragoneyegalaxy.com/uploads/1/3/0/3/130323405/nexewasiselemik.pdf
    • http://acceleratecleaning.com/uploads/1/3/0/6/130603874/74725c65562c19.pdf
    • http://pirateinwonderland.com/uploads/1/3/0/8/130814645/c0007f24.pdf
    • http://townofclermont.com/uploads/1/3/0/5/130590235/vovubosodu_namukapafol_dinirunuseka.pdf
    • http://k-ortiz-portfolio.com/uploads/1/3/0/4/130494389/5cc2be02957aa.pdf
    • http://livewellnow.us/uploads/1/3/0/6/130620885/dagamebimafuko.pdf
    • http://morganelwell.net/uploads/1/3/0/7/130739376/simax-mozogake-weforiz-guxurubobo.pdf
    • http://nirvanalove.org/uploads/1/3/0/5/130589400/d08466948a5f388.pdf
    • http://hostmaster.ainseysentertainment.com/uploads/1/3/0/4/130483540/budejifolemopaserul.pdf
    • http://womenofmindfulbusiness.com/uploads/1/3/0/6/130605072/noxebisawojukoxu.pdf
    • http://x0689541xstreamtravel.xsideas.com/uploads/1/3/0/6/130640141/130640141.html#ielts+9+test+2+reading+answer+key

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000521f.bin
5a9695438bb362a8b10d86f415c06da9d71f416851af8c6c9c762304ce3c8158		 pdf-font-stream PDF embedded font (sfnt) at offset 0x521F 16088 bytes
font_01_sfnt_off000069bb.bin
eabc089b652305d04c21f902f2b0365df4a184266a9a906a249abfaa2cddf43a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69BB 7992 bytes

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