Malicious PDF — malware analysis report

Static analysis result for SHA-256 78eb66d99ee8b751…

MALICIOUS

PDF

40.4 KB Authoring application: pdf-parser
MD5: 4c9271b3251e3ff197854936da5da7b2 SHA-1: 4fc49afe9e6547c7001ee2c7da49abebb71b2c64 SHA-256: 78eb66d99ee8b751ea90f012350afe953a96fb9cccb77469c8e37828bac2a106
120 Risk Score

Malware Insights

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

The PDF file was detected by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0. Static analysis revealed a large number of embedded URLs pointing to external PDF files, indicative of a link farm designed to redirect users to potentially malicious content. The document body itself contains garbled text and does not provide further clues about the specific lure.

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://thedigitaltheologian.com/uploads/1/3/0/4/130488096/1313213.pdf
    • http://xus.finansguru.ru/uploads/2020/01/28/e48469b8e99.pdf
    • http://smoothtransitionservices.com/uploads/1/3/0/4/130435771/rapiwukexaxo_loxotexekid.pdf
    • http://vipiski-besplatno22.icu/uploads/2020/01/28/4678817.pdf
    • http://remont-msk4.icu/uploads/2020/01/28/1147407.pdf
    • http://midamericanthermal.com/uploads/1/3/0/6/130604285/9329e74f629426f.pdf
    • http://familytravelsworld.com/uploads/1/3/0/4/130476215/sinaku-dilila-xuwuvovokufolik-befimugimaxev.pdf
    • http://slpresource.com/uploads/1/3/0/4/130476066/kigegiwudegufup_gugibesa_kelapotasen_zajerozuvebajaz.pdf
    • http://bradygazzome.com/uploads/1/3/0/3/130379192/bbcada.pdf
    • http://moniquewgyoga.com/uploads/1/3/0/3/130379336/1615754fb8085b4.pdf
    • http://batazakek.pulkovo3.info/uploads/2020/01/27/cb38603d6bf42c.pdf
    • http://allergy.mediutopia.com/uploads/1/3/0/6/130620574/130620574.html#chalkboard+back+to+school+template

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001361.bin
89a63d35319f91d38f148a8d2aed8657d6f773bc8318c651a5d7508b5ab89bf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1361 8748 bytes
font_01_sfnt_off000062cc.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62CC 2616 bytes

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