Malicious PDF — malware analysis report

Static analysis result for SHA-256 1edf3ab87ab45df7…

MALICIOUS

PDF

81.4 KB Authoring application: LibreOffice Draw
MD5: d1e37d5decc2e420261a3c9f8c913d1b SHA-1: 96782fa6580b3063548a96d24831275221ff5832 SHA-256: 1edf3ab87ab45df720ac139cec4a66a6af59a1cbf7fc8b3dd30a71374708b261
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 external PDF documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, aligning with the PDF_SEO_LINK_FARM heuristic.

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://kylealpha.com/uploads/1/3/0/6/130605173/dudamuwuwabi.pdf
    • http://midwestasphaltandgravels.com/uploads/1/3/0/6/130605447/7988f18e8c8f.pdf
    • http://morganwaisner.com/uploads/1/3/0/5/130539516/pikelezovimul.pdf
    • http://urbanpho.com/uploads/1/3/0/2/130287984/dojeg.pdf
    • http://boltprogram.com/uploads/1/3/0/5/130588902/895a0a3f.pdf
    • http://globalwaronchristmas.com/uploads/1/3/0/4/130489604/47778.pdf
    • http://padlog.net/uploads/1/3/0/2/130289565/d3570d467f3edd.pdf
    • http://ninanolan.net/uploads/1/3/0/6/130603865/4707695.pdf
    • http://biodanzacuerpoyalma.com/uploads/1/3/0/6/130640018/995ab.pdf
    • http://metamorphosisinblack.net/uploads/1/3/0/4/130435771/jitevafadurazam.pdf
    • http://niagaramedia.us/uploads/1/3/0/4/130476628/xupajonatiferel_gewarafuzimewi_buwowofudegis_dobesusafin.pdf
    • http://zambiasafarihunting.com/uploads/1/3/0/6/130640097/130640097.html#pan+application+form+49aa

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012e7.bin
f20f908cdc0dce7583209c2f10328dc7e4d7c269ae62da83670f03949a87bffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E7 9108 bytes
font_01_sfnt_off0000d043.bin
1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD043 1388 bytes
font_02_sfnt_off0000db37.bin
eacb4f0f0730c6046b0e84717413734aa95dcf5d5cbabc37884506e1ab84a559		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB37 20172 bytes

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