Malicious PDF — malware analysis report

Static analysis result for SHA-256 159d02a8524d90b0…

MALICIOUS

PDF

103.8 KB Authoring application: Solid Converter PDF
MD5: 3e6d2df0935ab65b5848beab07f14db2 SHA-1: 20a1ed09c6cf96e0f45556859f76c5953e8c69b0 SHA-256: 159d02a8524d90b0b75e2660d61a7a9723cbd23e72902a0aa7cd42f2d6b679db
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as flagged by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly support a malicious classification. The embedded URLs are the primary IOCs, suggesting a phishing or content distribution attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://exploredreamdiscover.org/uploads/1/3/0/8/130873955/ecd109e52b656.pdf
    • http://allmytreasures37.com/uploads/1/3/0/5/130543848/1331448.pdf
    • http://pausejudgement.com/uploads/1/3/0/2/130270752/8427736.pdf
    • http://drewkenney.com/uploads/1/3/0/7/130739218/90bd9bc13ca4ce.pdf
    • http://generosity.website/uploads/1/3/0/5/130588531/6047809.pdf
    • http://chicagopriests.org/uploads/1/3/0/3/130323315/4065952.pdf
    • http://daturafashion.com/uploads/1/3/0/5/130588976/gisise.pdf
    • http://thespeechteach.com/uploads/1/3/0/6/130605302/43df45.pdf
    • http://www.thunderfunkpdx.com/uploads/1/3/0/9/130969129/3537766.pdf
    • http://raphael-desenvolvimentopessoal.com/uploads/1/3/0/6/130622083/9122231.pdf
    • http://braizbistro.com/uploads/1/3/0/5/130551864/dc3d5a.pdf
    • http://grassrootsinvestment.com/uploads/1/3/0/6/130621640/bufaxikufi.pdf
    • http://asterstudios.com/uploads/1/3/0/7/130775615/pagezizo.pdf
    • http://steppponeservices.com/uploads/1/3/0/6/130603767/vadak_peviv.pdf
    • http://www.massagedbykiyanna.com/uploads/1/3/0/9/130968920/9105923.pdf
    • http://myberrygoodlife.com/uploads/1/3/0/3/130323151/wabuwavupefivaj.pdf
    • http://r4yex1.bdgct.com/uploads/1/3/0/4/130476203/130476203.html#abirami+anthathi+song+by+sirkali+govindarajan
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eda4.bin
71b9a6345b44c0c16f548c628eee189fe17d76634a448653ebb985d34950fb47		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA4 27172 bytes
font_01_sfnt_off000133e6.bin
1b3f82cd74c5b6671cc0c0d4a6c7877b74bb57ca469b2a61ef541918e41af838		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133E6 2652 bytes
font_02_sfnt_off00013f7d.bin
e9874a909f455f65facdbc0142e0500340240d8d329776427ec0b036f97c61e9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F7D 7740 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.