Malicious PDF — malware analysis report

Static analysis result for SHA-256 08d605c005b3d2c6…

MALICIOUS

PDF

34.1 KB Authoring application: OpenOffice Draw
MD5: 553941b3776e3a52fb0166e6901afb78 SHA-1: 630ce47e42b58a6db731c9e4488dff3b957962b1 SHA-256: 08d605c005b3d2c6161115001462808d856382e44ce0cc6563734612ae32917b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body, though heavily obfuscated, contains some of the same URLs found in the heuristics, reinforcing the link farm attack pattern.

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://bisudadiw.ekzolocin-ot-gribka.pro/uploads/2020/01/28/waligubiluj_xuxevuxukimixu_gitos_fotumubopaf.pdf
    • http://kallure.shop/uploads/1/3/0/5/130543166/rabisizawipejod-zewinuda.pdf
    • http://sasmitaworld.org/uploads/1/3/0/3/130379311/nulireg_figagimut_sifinede_sukaxuwaxosi.pdf
    • http://artbymadelinesmith.com/uploads/1/3/0/6/130621730/1887931.pdf
    • http://petrolladies.be/uploads/1/3/0/5/130588168/nilenubajedesij_pamopasiriduj_majope_dapifidame.pdf
    • https://polasopakiminup.weebly.com/uploads/1/3/0/2/130291033/xolofikerusaturujugu.pdf
    • http://om-dao.ru/uploads/2020/01/27/74c51f0bdf.pdf
    • http://outsidecraft.su/uploads/2020/01/28/vexuwexigaf.pdf
    • http://legenthology.com/uploads/1/3/0/6/130620556/jejugi_mukaxo_wokunejav.pdf
    • http://aquinasenglish.com/uploads/1/3/0/6/130604666/xutavipize.pdf
    • http://bano.altaigrand.com/uploads/2020/01/28/60c26.pdf
    • http://fare.stroimontag123.ru/uploads/2020/01/28/fibuxoxurir-xidope.pdf
    • http://aleriongames.us/uploads/1/3/0/4/130477775/53702a0f.pdf
    • http://photographictreasures.org/uploads/1/3/0/5/130541272/3e1ed2372f.pdf
    • http://verandahresidences.org/uploads/1/3/0/5/130551518/tuferutujed-zuxofi-mikeronofem-lerizelasulig.pdf
    • http://aimmos.org/uploads/1/3/0/6/130620459/bedusomaziguk-gobulawoma.pdf
    • http://omega-parts.ru/uploads/2020/01/27/1067358.pdf
    • https://woxexajom.weebly.com/uploads/1/3/0/6/130604863/2903580.pdf
    • http://asociacionperiodistaspr.org/uploads/1/3/0/5/130589083/130589083.html#bayalu+daari+kannada+film+songs+free

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015b1.bin
cdb7c09c8cad7226d3462e409fffb939b856ca41f55640ca1ba477429aba52fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15B1 7924 bytes

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