Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a9a47b501c08e29…

MALICIOUS

PDF

38.7 KB Authoring application: GIMP
MD5: 9ea30c66f54528100db10bc87fd8ee64 SHA-1: 7795a0b4338623b7c67827d5b371aa8c22688bca SHA-256: 4a9a47b501c08e2927e8946d99d32d5cea9d32c550c8f31a15c259d0246d2a79
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 files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though heavily corrupted, contains fragments of URLs consistent with the embedded link farm.

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://katiedix.me/uploads/1/3/0/3/130313156/4746897.pdf
    • http://www.dog-gonefancy.com/uploads/1/3/0/4/130483808/ledikesij.pdf
    • http://login2learn.org/uploads/1/3/0/4/130476091/vorifo.pdf
    • http://www.google366b97a32bc7f4fb.biauk.com/uploads/1/3/0/7/130775228/3708829.pdf
    • http://portabletoiletsmichigan.com/uploads/1/3/0/5/130588269/xefaxi-fedujokemedof.pdf
    • http://merakiskincare.net/uploads/1/3/0/5/130548108/gatenibu.pdf
    • http://myeagerlaw.com/uploads/1/3/0/5/130590208/3935095.pdf
    • http://newtraditioncoffee.net/uploads/1/3/0/6/130604324/xinidebebanavu_sukogozixiguv_tizipol.pdf
    • http://myqmunity.com/uploads/1/3/0/2/130289247/9221040.pdf
    • http://lautbirubungalows.com/uploads/1/3/0/7/130738641/4187536.pdf
    • http://mta-sts.artpourparties.com/uploads/1/3/0/7/130739564/mejiwozelef.pdf
    • http://premiumrooms.com/uploads/1/3/0/8/130813663/wakexekisimiliruxa.pdf
    • http://milesoftraining.com/uploads/1/3/0/6/130639780/wemumeguforipowolitu.pdf
    • http://pmcgdev.com/uploads/1/3/0/4/130483265/waxig.pdf
    • http://redbarhalifax.com/uploads/1/3/0/4/130476322/7028198.pdf
    • http://bannerfm.com/uploads/1/3/0/6/130621871/298ba8b2a6fe1ce.pdf
    • http://geneveverobinson.com/uploads/1/3/0/7/130739316/gisizof.pdf
    • http://www.brisgroup.org/uploads/1/3/0/6/130603954/giwaboviteremezaf.pdf
    • http://consulatcotedivoire.com/uploads/1/3/0/7/130740434/64e128.pdf
    • http://taskforcepruritus.org/uploads/1/3/0/5/130590545/1695344.pdf
    • http://aloaninthesun.com/uploads/1/3/0/6/130639076/6666201.pdf
    • http://looe-festival-of-the-sea.com/uploads/1/3/0/4/130478374/jufifuvoxevus_nusuvukoxuri_larebowi.pdf
    • http://sellmyownboat.com/uploads/1/3/0/3/130313500/gikefiguxuj.pdf
    • http://mail.manunicum.com/uploads/1/3/0/2/130272579/rorizup-gegug.pdf
    • http://mojiles.net/uploads/1/3/0/7/130739827/78db8.pdf
    • http://www.thenannysden.com/uploads/1/3/0/6/130620695/130620695.html#activity+based+costing+multiple+choice+questions+and+answers
    • http://taskforcepruritus.org/uploads/1/3/0/5/130590

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032d1.bin
915b08ba3549f2833071ba499a5534a94e8b0ba36ecb1eeeffc446e78d2832af
pdf-font-stream PDF embedded font (sfnt) at offset 0x32D1 7904 bytes