Malicious PDF — malware analysis report

Static analysis result for SHA-256 c65e0979bc05c8bd…

MALICIOUS

PDF

85.9 KB Created: 2020-03-10 05:42:18 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f35d7c3131beb392570a348643c6255d SHA-1: 0a1de2df6f50feb701f54e3399f807f660e7d9a1 SHA-256: c65e0979bc05c8bd628b2a96d6f608691177e74d650f40db64fa178a2121a575
94 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to SEO-optimized PDF files hosted on various domains. The document body, though partially corrupted, contains a URL related to 'raw vegan diet plan for weight loss', suggesting a lure to a content farm or phishing site. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

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://a1836163xstreamtravel.xsideas.com/uploads/1/3/0/7/130739086/130739086.html#raw+vegan+diet+plan+for+weight+loss
    • http://fermentedspirits.com/uploads/1/3/0/5/130551512/letifuwovetexuteto.pdf
    • http://www.5starspamassage.com/uploads/1/3/0/7/130776325/4870598.pdf
    • http://eftcon.com/uploads/1/3/0/8/130874435/c08d248bdea20b.pdf
    • http://scoreadog.com/uploads/1/3/0/2/130289535/44e94739d9b7f0.pdf
    • http://admin.quirkyquiltress.com/uploads/1/3/0/6/130620747/raxuzej.pdf
    • http://assentive.net/uploads/1/3/0/6/130604136/kenedipinu-gotozamexexa.pdf
    • http://0frenchpolishing.com/uploads/1/3/0/5/130588584/492497.pdf
    • http://imdrfllc.com/uploads/1/3/0/5/130541308/xixupabipawor.pdf
    • http://nicoleadriennephotography.com/uploads/1/3/0/2/130291786/386781d0053.pdf
    • http://wbr7b8hju8.butterfly520.com/uploads/1/3/0/4/130483739/gofikin.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011458.bin
8674d629b26173569c084c3d54e20f234dc19e0486d20ea00ce8c795cecb15af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11458 8112 bytes
font_01_sfnt_off0001339a.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1339A 16036 bytes

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