Malicious PDF — malware analysis report

Static analysis result for SHA-256 433605f5bcae8342…

MALICIOUS

PDF

39.1 KB Authoring application: Poppler-utils
MD5: 0f8120212ec1a1f9e602b9e5e01175c6 SHA-1: 201823c1110abdc4337b3007b60eff80f74f234e SHA-256: 433605f5bcae8342305d35545073baa4669b90045af3099659efd98c55742da8
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body, though partially corrupted, mentions 'Super smash flash 2 beta apk', suggesting a lure to download a game. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution via the linked URLs.

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://ferreirawellness.com/uploads/1/3/0/6/130603704/336822c21b6.pdf
    • https://sebuvajuga.weebly.com/uploads/1/3/0/2/130289563/8271515.pdf
    • http://biruf.novo-parfum.ru/uploads/2020/01/29/e32af.pdf
    • http://mugaz.dsmodes.com/uploads/2020/01/27/8f0473.pdf
    • http://fejuj.eovma.fun/uploads/2020/01/27/7b8e616e084.pdf
    • http://notchviewlasertherapy.com/uploads/1/3/0/5/130538923/1f508.pdf
    • http://rightjoin.com/uploads/1/3/0/5/130539637/sajusasi.pdf
    • http://donat-to-katerina.com/uploads/2020/01/27/dufugofipaxulofo.pdf
    • http://aimonpurpose.com/uploads/1/3/0/5/130590296/3493687.pdf
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/2/130289772/130289772.html#super+smash+flash+2+beta++apk

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001222.bin
919c08f2c91b8fb1b54b464177866c5ef4ffcecea6312c5ba16b577bab0206f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1222 8664 bytes
font_01_sfnt_off00005e7f.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E7F 1708 bytes

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