Malicious PDF — malware analysis report

Static analysis result for SHA-256 365d325054415c6b…

MALICIOUS

PDF

47.6 KB Created: 2020-03-29 22:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1911cdae1ff4b3a061dfac9dda4cf7cc SHA-1: 5dc4af3508d5b79ce94409c050b77bde474019f8 SHA-256: 365d325054415c6bf3ab752724b00751e67a8213422a3c529da50ce8c03414f0
94 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm, containing a large number of external URLs. The PDF_SEO_LINK_FARM heuristic firing indicates a mass of external links, suggesting a potential SEO spam campaign or a distribution point for further malicious content. The ML classifier strongly supports the malicious nature of this PDF. No scripts were extracted from this sample, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://myentouragemusic.com/uploads/1/3/0/4/130476112/130476112.html#20+ft+into+meters
    • http://my123456.xyz/uploads/1/3/0/8/130874283/681733.pdf
    • http://hindsqr.com/uploads/1/3/0/7/130738578/9a55a9c984.pdf
    • http://www.treehuggerhotsauce.com/uploads/1/3/1/1/131163793/811a1cb7.pdf
    • http://raaseypi.com/uploads/1/3/0/2/130270982/peraduzo.pdf
    • http://havensaloncotati.com/uploads/1/3/0/7/130775129/kimigas.pdf
    • http://leafmeupteaco.com/uploads/1/3/0/6/130604081/fowefivirupis.pdf
    • http://gadget-catcher.com/uploads/1/3/0/5/130539019/446316e7e58f3.pdf
    • http://sallycasey.com/uploads/1/3/0/7/130738565/kotodemubukinemumusu.pdf
    • http://liceotomasmorales.com/uploads/1/3/0/7/130739891/b6d1c0c60.pdf
    • http://northforkdoor.com/uploads/1/3/0/6/130621021/zijokutudadiwu.pdf
    • http://rachelroccophotography.com/uploads/1/3/0/6/130640142/3e11131c34.pdf
    • http://theghosttours.com/uploads/1/3/0/7/130738915/8904924.pdf
    • http://toydefenser.com/uploads/1/3/0/2/130272638/rivenim_lelavizegeni.pdf
    • http://detailinggreensboro.com/uploads/1/3/0/2/130291827/nifufuzutojuzusurive.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072b0.bin
e5f67b1c9af9034245694ad111de4625751599dbc9e3bfbf479cb255e4e7c842		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B0 7884 bytes
font_01_sfnt_off0000919c.bin
83d89f79375f7f339e88070a8779324ce221c94923bff415e388e162fbc46cfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x919C 2604 bytes
font_02_sfnt_off00009acf.bin
e09dc7ad56e8e1526617d285a6dd034ca63295bb8ba21112af6060cda82e9610		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9ACF 16272 bytes

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