Malicious PDF — malware analysis report

Static analysis result for SHA-256 784dc4b57ce8ff2d…

MALICIOUS

PDF

45.0 KB Authoring application: PDFedit
MD5: 7a7ff1b95a4148e6512914ab2cf64fac SHA-1: 4152d3b5163af30d053d66829ae14798613d8c96 SHA-256: 784dc4b57ce8ff2de60a4b0aa713e18f139fdbb7af23ccc384011a668b531ac1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a large number of embedded external links, a technique often used for SEO spam or to direct users to malicious sites. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The document body content appears to be corrupted or irrelevant, but the presence of numerous URLs points to a link farm or redirection strategy.

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://4rtik.com/uploads/1/3/0/4/130483937/447d7e72bf4.pdf
    • http://saddlemachine.com/uploads/1/3/0/4/130477007/01864d285a0e7b.pdf
    • http://payinfo24.online/uploads/2020/01/28/bovapodapapedar-siwapukofamu-girof.pdf
    • http://sarahsheppardsart.com/uploads/1/3/0/6/130605390/5100147.pdf
    • http://discovervirtualagencyllc.org/uploads/1/3/0/5/130551160/dbbab26b2f1ead8.pdf
    • http://alicelandry.com/uploads/1/3/0/2/130289592/8275786.pdf
    • http://remotedatabaseadministrators.com/uploads/1/3/0/6/130603764/giroga.pdf
    • http://avispire.co.uk/uploads/1/3/0/5/130589056/869841732c0.pdf
    • http://cocominksstore.com/uploads/1/3/0/5/130539203/vezovepumotovixomeso.pdf
    • http://mrsdavisswghs.com/uploads/1/3/0/4/130476598/komesumatefe_nedimojaxu_watizedudif.pdf
    • http://jordanridgesauces.com/uploads/1/3/0/6/130620961/a724fa1.pdf
    • http://smilyface.org/uploads/1/3/0/5/130550970/6969880.pdf
    • http://uwkfk.com/uploads/1/3/0/2/130289002/zafuzokavilexuwuk.pdf
    • http://animaliadiertraining.net/uploads/1/3/0/2/130272483/130272483.html#fc+barca+bleacher+report
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013a8.bin
ca7e69d01c33e9f829358c90996d0288841b9f007dd110f1340791d4947cee82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A8 9104 bytes
font_01_sfnt_off00005fd6.bin
0bcb8714eeee09f3a0b97cfa4268358194ea58a2d09b0ea1e98cdb863a7a445a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD6 16404 bytes
font_02_sfnt_off0000753b.bin
c947f3057987673aabe1e9de060394ae2315f3eb597f616070dd9b4fe40dea72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x753B 1624 bytes

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