Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6c1dc06f161a3e2…

MALICIOUS

PDF

38.1 KB Authoring application: LibreOffice
MD5: 23689f862670fbfd348732702cc0874f SHA-1: 39f6830f9ea84225da84bf54bf0d9a0b511ec999 SHA-256: a6c1dc06f161a3e29ff60dd51195cbb48753b92e34080a72a7648d3a653242be
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, forming a link farm. This is a common technique used to redirect users to malicious websites for phishing or to download further malware. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the critical heuristic 'PDF_SEO_LINK_FARM' strongly indicate this malicious intent. No scripts were extracted, and the document body was heavily obfuscated, but the primary attack pattern is clear from the URL structure.

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://americanbeachphoto.com/uploads/1/3/0/4/130488301/nuxorunuxabewekur.pdf
    • http://theego.org/uploads/1/3/0/6/130604014/3f393.pdf
    • http://dermblog.com/uploads/1/3/0/3/130323733/niduti.pdf
    • http://pyramation.com/uploads/1/3/0/2/130270866/1949534.pdf
    • http://usedhorsesaddles.com/uploads/1/3/0/2/130288926/6bcb5e63427.pdf
    • http://budgetweddingsingapore.com/uploads/1/3/0/6/130620819/8220687.pdf
    • http://audioxproductions.com/uploads/1/3/0/3/130313363/cd34d2337.pdf
    • http://www.redefinetherapy.org/uploads/1/3/0/8/130814432/668352.pdf
    • http://www.georgiacrook.co.uk/uploads/1/3/0/6/130639706/bebedc943.pdf
    • http://www.guests.pt/uploads/1/3/0/3/130323465/2554100.pdf
    • http://skkcon.com/uploads/1/3/0/5/130551986/898f99.pdf
    • http://painfulleg.com/uploads/1/3/0/8/130814295/6995123.pdf
    • http://stavrias.com/uploads/1/3/0/7/130776525/soxemope-revodedugozaj.pdf
    • http://www.vinnyinspirations.com/uploads/1/3/0/7/130776801/xovuputobabe_vogum.pdf
    • http://nzgrinding.designpreviewer.com/uploads/1/3/0/7/130776334/39a75.pdf
    • http://glider.store/uploads/1/3/0/2/130272328/vaxisuw_ridox_mitujatebubef_wovuwazug.pdf
    • http://samarayaart.com/uploads/1/3/0/6/130620701/kitek_fejimuve_niditomu_kasanuferozajev.pdf
    • http://hostmaster.projectruimte-hoofdstraat17.com/uploads/1/3/0/9/130969331/776024.pdf
    • http://auroracbdhemp.online/uploads/1/3/0/8/130873852/ratib_gaxekakenipu_wusavola.pdf
    • http://andmerchant.org/uploads/1/3/0/6/130621584/130621584.html#etsy+very+hungry+caterpillar+birthday+party
    • http://samarayaart.com/uploads/1/3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000036e1.bin
d0a48a02282b583571b3e80ee976f5e58ee6e93935e27204717f5a552e21e2c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x36E1 7740 bytes

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