Malicious PDF — malware analysis report

Static analysis result for SHA-256 3344062e3398a80d…

MALICIOUS

PDF

56.3 KB Authoring application: Nitro PDF
MD5: 1fb4d7364841f1cc027419c7f458a2fc SHA-1: 3a9a5474ad09ce8647167938e66f919e08f460d6 SHA-256: 3344062e3398a80dbf43e5b9176458b0b49b9e4fbf51d4b1c9fc4840cd5033ea
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links to external websites, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, contains references to 'Chhath puja 2019 chaiti song' and includes multiple URLs, suggesting a lure to a link farm. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. The ML classifier also strongly indicated maliciousness.

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://servicepartnervanderveenassen.nl/uploads/1/3/0/6/130604126/nijuk.pdf
    • http://babygrunts.net/uploads/1/3/0/5/130588417/e5f2367a.pdf
    • http://cartergilmorecollection.com/uploads/1/3/0/6/130621814/a0b363704c78633.pdf
    • http://levoxox.fastkid.info/uploads/2020/01/28/fabav_razinav_julutenorudopa.pdf
    • http://vekabeg.feorem.ru/uploads/2020/01/28/5a8d703fe845.pdf
    • http://myentouragemusic.com/uploads/1/3/0/4/130483772/130483772.html#chhath+puja+2019+chaiti+song

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010f7.bin
33ba4eeb5a31f53b41338af522f382c7a8ccd6a172ace6ea333dbd894446683a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F7 9060 bytes
font_01_sfnt_off000075c8.bin
dc05961184b65001e46e0197e4775e3078ed9dd898b3c7320e8e454ee02ff92a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75C8 12008 bytes
font_02_sfnt_off0000954c.bin
1707630b528d600996af2dcbcf829efe78a27bb1f50a24789c19f34c9059fd4e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x954C 16460 bytes

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