Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fae69651eba083a…

MALICIOUS

PDF

43.8 KB Authoring application: pdf-parser
MD5: c900d0003cec61d1ac1c34a62896e8ee SHA-1: 066adebba5b3f91a3d0795a105f7c8d3b7712978 SHA-256: 4fae69651eba083aee64105cfff04819cba4f927f758b31edd51eeb69f32f6cb
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of external links, identified as a link farm by the PDF_SEO_LINK_FARM heuristic. This suggests a phishing or malware distribution attempt. The ClamAV detection and ML classifier further support the malicious nature of the file. No scripts were extracted from this sample, and the document body was heavily obfuscated, but the presence of numerous suspicious URLs points to a delivery mechanism for further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://thecontemporarycottage.com/uploads/1/3/0/4/130488320/3101657.pdf
    • http://acupunctureexpress.com/uploads/1/3/0/5/130551794/07ea6c.pdf
    • http://winadeluta.suitstaticmusic.com/uploads/2020/01/27/lutujulo_tipoporuk_voropojeb.pdf
    • https://xarokubemud.weebly.com/uploads/1/3/0/3/130379681/ca50edec975.pdf
    • http://ruthwildwood.com/uploads/1/3/0/4/130488483/juxiwizekokasiv-zinomirunax.pdf
    • http://wudokuto.zerebra-leaf.com/uploads/2020/01/28/2125370.pdf
    • http://dianehenning-luce.com/uploads/1/3/0/5/130588590/5108024.pdf
    • http://mustangremediation.com/uploads/1/3/0/3/130323632/1773631.pdf
    • http://caskmutation.org/uploads/1/3/0/3/130379175/dikabuxugab-voduwejekunasop.pdf
    • http://sushi-logos.com/uploads/1/3/0/6/130640136/bawegi-pegixev-xavopibapi-lopidago.pdf
    • http://animagus101.weebly.com/uploads/1/3/0/6/130621344/4130230.pdf
    • http://thefantasyparis.com/uploads/1/3/0/6/130640155/kefusiketug.pdf
    • http://apartmrome.com/uploads/1/3/0/5/130588834/9427578.pdf
    • http://gav.epay-clientesv3-0range.com/uploads/2020/01/28/d597f70aeb0b.pdf
    • http://rati.moiklining.ru/uploads/2020/01/28/83b84318cad6e.pdf
    • http://tupa.vinil-koritsa.ru/uploads/2020/01/27/9933297.pdf
    • https://xopobilug.weebly.com/uploads/1/3/0/2/130272573/c20dc9da885a7.pdf
    • http://modusmarketseurope.com/uploads/1/3/0/5/130551770/nalobitafebexosigek.pdf
    • http://arpad89.weebly.com/uploads/1/3/0/3/130313790/takesekusur-wudirirerevenal.pdf
    • https://fewaxudavinalu.weebly.com/uploads/1/3/0/5/130589227/2c7189.pdf
    • http://siroz.z-kiski.fun/uploads/2020/01/27/jovuguwelutagilad.pdf
    • http://winpoker.org/uploads/2020/01/27/2184524.pdf
    • http://faithandyoga.com/uploads/1/3/0/6/130639382/vezaxifi.pdf
    • http://oilbalance.com/uploads/1/3/0/5/130550675/130550675.html#sbi+so+online+application+form+2018
    • http://arpad89.weebly.com/uploads/1/3/0/3/130313790/takesekusur-wudirirerevenal.p

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000018c0.bin
120614f68aa3c8dbe2518e4b8c13bff57c9ccd794889a1074cf1d9c4dcba86ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18C0 8328 bytes

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