Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f3fe52342738c96…

MALICIOUS

PDF

34.7 KB Created: 2020-04-15 11:16:52 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5a068737d25da40b782315ded4146f8f SHA-1: fc24cfb4cfce989c4e65c3376d704293c49f80bd SHA-256: 2f3fe52342738c964b222f7dcc65525185af9922f7b62277d53bc5214d6d24f6
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though heavily obfuscated, contains a URL that appears to be related to downloading an Android application mod. The primary intent appears to be directing users to a network of websites that host further PDF documents, likely as a form of link farming or to distribute malicious content.

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://mittenand.ch/uploads/1/3/0/4/130483582/130483582.html#asphalt+7+apk+mod
    • http://cannapendium.com/uploads/1/3/1/4/131407011/ef21fa.pdf
    • http://processofilluminationtx.com/uploads/1/3/0/7/130775590/tilawonorako.pdf
    • http://levelsofminimalism.com/uploads/1/3/0/5/130588951/tameguvapenigi.pdf
    • http://pizsa.com/uploads/1/3/0/6/130621163/f0868ca35c21.pdf
    • http://myshirabe.com/uploads/1/3/1/4/131437601/vatupa_tumopu_rimamikujeduz.pdf
    • http://desertwirelessrepairs.com/uploads/1/3/0/4/130435888/bumuferinuxav.pdf
    • http://fletchertavern.com/uploads/1/3/1/0/131071062/7dbeffb7eb09fc.pdf
    • http://thefarmandco.com/uploads/1/3/0/4/130435716/wixajisusexeketu.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_off00006131.bin
4ac5e86d9fb736c62c7fe393d79f35ae26021f55d8cf956e12b5a46d191bd5ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6131 7724 bytes

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