Malicious PDF — malware analysis report

Static analysis result for SHA-256 7115602f9332d713…

MALICIOUS

PDF

38.1 KB Created: 2020-04-09 16:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 53bca68c968a973b1e274af4de7a64a7 SHA-1: 6d32fe7f9fc5f4e653c595badd107cb9ccb0f9dc SHA-256: 7115602f9332d71323803bb97a2856bc7f66df9d6c9cf5e60678d635546a4c9d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The primary URL, http://wildchild.dance/uploads/1/3/0/2/130272859/130272859.html#mi+error+fue+ser+solo+tu+vecina+google+drive, is also present in the document body. This suggests the document's purpose is to redirect users to potentially malicious websites, possibly for SEO spam or to host further malicious content.

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://wildchild.dance/uploads/1/3/0/2/130272859/130272859.html#mi+error+fue+ser+solo+tu+vecina+google+drive
    • http://my-travel-online.com/uploads/1/3/0/5/130590380/vujijef.pdf
    • http://afaq-pftc.org/uploads/1/3/0/6/130621959/e51211ee5cdab62.pdf
    • http://shesjustamom.com/uploads/1/3/0/7/130739126/a5052acc7d405.pdf
    • http://yolandaluna.net/uploads/1/3/0/7/130739731/kowavel-xozekim-bodonu-wujemufakunomu.pdf
    • http://handi-tech.com/uploads/1/3/0/7/130775182/midewodo-kadikezimikudep.pdf
    • http://pogopossum.net/uploads/1/3/0/2/130271060/423b5cffc1bed24.pdf
    • http://mountainmascot.com/uploads/1/3/0/5/130543653/nuvamupo-durida-wudawufuf-fipezu.pdf
    • http://hawkwelldrilling.com/uploads/1/3/0/5/130588744/b38e58347ba.pdf
    • http://infinitychocolates.com/uploads/1/3/0/4/130488227/9d4c31c3d.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068e8.bin
fec1b50cce3f158a87614fa386e9935a52210bef9a960c3f27e1a3185689ec05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E8 9160 bytes

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