Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9ef9a6592764861…

MALICIOUS

PDF

62.2 KB Authoring application: PDF Studio
MD5: 2fd5608bd1e0fda31af95588378ff5d3 SHA-1: 97589e9287174a6955d472ffa7b8ba883548bad5 SHA-256: c9ef9a6592764861084c0f152c1e95c50c3e67fe876ace9d5cb5051a7bb5f9e7
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation to drive traffic or distribute malware. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly indicate malicious intent. The document body itself is heavily truncated and contains mostly garbage data, offering no direct clues about the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://www.atlifesend.com/uploads/1/3/0/5/130550663/6234524.pdf
    • http://portandvine.com/uploads/1/3/0/7/130775189/8237140.pdf
    • http://davediamond.info/uploads/1/3/0/6/130621918/mapakokamusat_dutuporo.pdf
    • http://danoboots.com/uploads/1/3/0/6/130621359/pumejibofafaxopori.pdf
    • http://michelgaymard.com/uploads/1/3/0/7/130739558/9772780.pdf
    • http://www.reliefathand.com/uploads/1/3/0/4/130488669/juginev-wirunijobemewo-buguviwobobuxot.pdf
    • http://sarahpoulgrain.com/uploads/1/3/0/3/130323332/32d426c127.pdf
    • http://www.hernandezeducate.com/uploads/1/3/0/3/130379368/renaxekejudiludunefe.pdf
    • http://stylerant.com/uploads/1/3/0/6/130622022/dunonirolofavaseti.pdf
    • http://mx.celebratevintage.com/uploads/1/3/0/6/130620619/riwanebe_gumerufate_wofesezid_gakozo.pdf
    • http://freeachievers.com/uploads/1/3/0/4/130483136/folakaxisuxo-nowedimalukoxet.pdf
    • http://jermaineblackwell.com/uploads/1/3/0/4/130476013/fumosovijesibutuver.pdf
    • http://immuno2000formula.com/uploads/1/3/0/8/130874136/5163339.pdf
    • http://www.elegant-escapes.voyagerwebsites.com/uploads/1/3/0/3/130323515/pepobewebiguwoju.pdf
    • http://shilohrealty.org/uploads/1/3/0/6/130604312/608e95940b.pdf
    • http://organiccrafttea.com/uploads/1/3/0/2/130273571/d28cfa.pdf
    • http://logitech-enjoy.com/uploads/1/3/0/7/130739001/992a26ddae368af.pdf
    • http://99trustedarticles.com/uploads/1/3/0/6/130620750/a9c3adf.pdf
    • http://ginamaethejones.com/uploads/1/3/0/5/130588289/4631106.pdf
    • http://noisymusic.org/uploads/1/3/0/3/130324370/6024347.pdf
    • http://session9photography.com/uploads/1/3/0/4/130476248/a1cb28fa1.pdf
    • http://mreasthamclass.com/uploads/1/3/0/6/130604539/2150370.pdf
    • http://moodage.net/uploads/1/3/0/8/130813731/e75214cfc68e55b.pdf
    • http://hostmaster.heemkring-vilvoorde.be/uploads/1/3/0/5/130544321/danowobekexazor-vivagakugune.pdf
    • http://mountainbikegreenville.com/uploads/1/3/0/5/130551876/e41af6.pdf
    • http://mx.grandsalinelibrary.com/uploads/1/3/0/6/130620209/130620209.html#jansatta+epaper+in+hindi+pdf

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005615.bin
1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5615 1388 bytes
font_01_sfnt_off0000605e.bin
4130ae87097b956a30697b841cf85ac402b1acd4e59f929d9a72bbb9c6e7c1c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x605E 16968 bytes
font_02_sfnt_off00008f13.bin
8a667a59a35cd3ea07538c394f3989faf729e5d0dde42d4091aee6e4d3ab1595
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F13 8064 bytes