Malicious PDF — malware analysis report

Static analysis result for SHA-256 939c097153fa5aba…

MALICIOUS

PDF

53.4 KB Authoring application: OpenOffice Draw
MD5: c287b3b8e1274b1cebc7a5a48a4c0bc9 SHA-1: bca86a0e31f58849188793e3f620e70229c96d93 SHA-256: 939c097153fa5aba80431a46aaac02b115ffb8d6f34fd5bd24418ab4e122fe77
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF documents, indicating a link farm or redirection scheme. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly suggest a phishing or SEO spam campaign. The document body, though heavily corrupted, also contains some of these URLs, reinforcing the link farm observation.

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://sligergames.com/uploads/1/3/0/6/130604618/7957622.pdf
    • http://jwlabs.dev/uploads/1/3/0/4/130483244/zexuzu-timaxet-balamiti-kaxajo.pdf
    • http://morgangracejarrett.com/uploads/1/3/0/2/130274098/gowefuwazebo.pdf
    • http://adagedanceanddrama.com/uploads/1/3/0/4/130435787/7139710.pdf
    • http://christinalozanofier.com/uploads/1/3/0/5/130541137/xukigeredeno.pdf
    • http://nagira-casino.com/uploads/1/3/0/4/130477040/duvozop.pdf
    • http://showtimetravelegency.com/uploads/1/3/0/5/130540240/26b6c4e1c105.pdf
    • http://livemusicgozo.com/uploads/1/3/0/6/130620678/5994824.pdf
    • http://vipiski-online6.icu/uploads/2020/01/29/2900029.pdf
    • http://mnpscollaboration.org/uploads/1/3/0/2/130273740/20b1216.pdf
    • http://911bodyrescue.com/uploads/1/3/0/2/130270738/gokoxejutilotu.pdf
    • http://wearmonster.com/uploads/1/3/0/6/130603745/a0423f998.pdf
    • http://woodlandstuition.com/uploads/1/3/0/3/130313157/130313157.html#crystal+report+runtime+13.+0.+21

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000132d.bin
268ed91fd4609dbe9d3a6586e557e55ad6d730d33a6898d31c20d558965ea3b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132D 8536 bytes
font_01_sfnt_off00008711.bin
e2f1373bf3d70a40ff4276a486f0a1d2d32154e4f45ad1243a44c3d3b7d91cea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8711 2652 bytes
font_02_sfnt_off00008fa4.bin
99e104d881e85dd31718dace8b3ebe3ea0ca01558962fb90b92a97506160e770		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FA4 6480 bytes

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