Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef5c49fb33e8aaee…

MALICIOUS

PDF

49.3 KB Authoring application: Mobipocket Creator
MD5: 6959ec3cba3e0f929101a1e0a8e49bcd SHA-1: 13e9700af3120cc25e5b5d584a129a53cc0055a5 SHA-256: ef5c49fb33e8aaeee878daac6e9fe50ece633745d32236b658c04927634642e8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 malicious intent. The embedded URLs are likely used to redirect users to phishing sites or to distribute further malware. No scripts were extracted from this sample.

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://thecannabiscusine.com/uploads/1/3/0/3/130379777/5e4ff.pdf
    • http://katrinadasilvaart.com/uploads/1/3/0/6/130639462/xanem_vadidi_batubupi_takazaxutabipi.pdf
    • http://lobijeseti.suot.pro/uploads/2020/01/28/7427460.pdf
    • https://pelirevuj.weebly.com/uploads/1/3/0/5/130588517/37cc6bf3739.pdf
    • http://viveb.maff.fun/uploads/2020/01/28/bc17fb8b1.pdf
    • http://newyearswim.co.uk/uploads/1/3/0/4/130436415/878e5c9.pdf
    • http://audioedgesolutions.com/uploads/1/3/0/4/130492441/195741a.pdf
    • http://limitlessillusions.com/uploads/1/3/0/6/130639241/xematezutat-muwakavip-kapezevarariv.pdf
    • http://angeliquedeclercq.be/uploads/1/3/0/2/130291596/sekeb.pdf
    • http://moge.sk-evrodom.icu/uploads/2020/01/29/vutibetepifijomem.pdf
    • http://kvartum.ru/uploads/2020/01/27/muzexavutu.pdf
    • https://sawezakus.weebly.com/uploads/1/3/0/2/130270746/zijisulibejusox.pdf
    • http://kevinmaier.com/uploads/1/3/0/2/130289189/366396.pdf
    • http://offalyit.com/uploads/1/3/0/4/130477351/xumodalum-vulawan.pdf
    • http://vagud.sex-girls.icu/uploads/2020/01/27/6220871.pdf
    • http://doebleygen564s14.weebly.com/uploads/1/3/0/4/130483924/berobenudijaj-patatirosavi-sigipefi.pdf
    • http://dpaulart.com/uploads/1/3/0/5/130589218/130589218.html#a50+a70+a80+vergleich

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001480.bin
70adbac2e70099ceed0aaf7f04f5a4202374e035397d53e1b4424d52e58d7db3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1480 8764 bytes
font_01_sfnt_off00007a95.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A95 16036 bytes

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