Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1b1935d1fc8bcb5…

MALICIOUS

PDF

38.5 KB Authoring application: Pdftk
MD5: 14cd9561cdbcccaaad41741dbf1cea61 SHA-1: 2d2583ec97ac29510508e4a2f899d5932202377c SHA-256: d1b1935d1fc8bcb5d519824b8c99faae41ab7a981ef67e42b9ec575f41ac24e1
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body contains garbled text, suggesting it is not intended for human consumption but rather as a container for the malicious links.

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://parowanaapersonalstorage.com/uploads/1/3/0/7/130775786/nekuzapexamigesa.pdf
    • http://scottgieser.com/uploads/1/3/0/5/130543029/davazuwowujufozojune.pdf
    • http://randychapel.net/uploads/1/3/0/4/130488063/wuponone.pdf
    • http://rubyoakphotography.com/uploads/1/3/0/2/130274109/5538982.pdf
    • http://shawnaallred.com/uploads/1/3/0/3/130313340/wevesiwedasewo_tetipejap_zufudifefose.pdf
    • http://whitemountainsweddings.com/uploads/1/3/0/6/130620209/4504020.pdf
    • http://adjuvotechnology.com/uploads/1/3/0/3/130323210/dedbda3b37001ad.pdf
    • http://seanhaseymassage.com/uploads/1/3/0/5/130546118/jitarifesufagi-ziwezipovopula.pdf
    • http://www.deerislandoyster.com/uploads/1/3/0/5/130589061/4343163.pdf
    • http://mta-sts.davidwentworthart.com/uploads/1/3/0/7/130739309/xiwomig_lejibub_nenida.pdf
    • http://gostudiom.com/uploads/1/3/0/3/130313155/dulawu-potek-renoxawu-ruxis.pdf
    • http://eppsonfoundation.org/uploads/1/3/0/6/130620861/jizarixixozuka-figedazabuda-zopufegopoxafuv-zawulomu.pdf
    • http://smaese.com/uploads/1/3/0/2/130288394/d1fef69bf7ce.pdf
    • http://eurekaarchitecture.com/uploads/1/3/0/4/130435726/ribar_lajarode.pdf
    • http://marketingtipsnow.com/uploads/1/3/0/2/130289161/ladiwibu.pdf
    • http://www.cjsalestraining.com/uploads/1/3/0/4/130476650/1e616e3a0.pdf
    • http://www.arden.org.uk/uploads/1/3/0/6/130604125/vulorave-xelatepomo-ditofomi.pdf
    • http://zofe.fr/uploads/1/3/0/3/130313191/5f147.pdf
    • http://www.bhshousingessay.com/uploads/1/3/0/9/130969053/karugede_mupusibevotomi_reninopabubome.pdf
    • http://mail.lakelandchoralsociety.org/uploads/1/3/0/6/130604626/38cc0dcc1.pdf
    • http://host168.carmichaelnl.com/uploads/1/3/0/7/130739505/130739505.html#ectopic+pregnancy+belly+pain
    • http://adjuvotechnology.com/uploads/1/3/0/3/13032321

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000376e.bin
48f54212b6b108328a55ad7fb058c9b384eb31334a9833ca360a9d1ca4275ec9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x376E 7664 bytes

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