Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda541efa6ca59d8…

MALICIOUS

PDF

38.3 KB Created: 2020-03-30 13:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 858dd5528fcadbe57fdbd58dd84f346d SHA-1: 6aacca8e165ca421aaf3ccd7d264c0c80ea082be SHA-256: fda541efa6ca59d8072824c36f18405a30abf70af74ca35718e90d0bb055f84d
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, many of which appear to be SEO-optimized lures for book downloads. The primary heuristic indicates a PDF link farm, suggesting a tactic to drive traffic to potentially malicious sites. The document body, though heavily obfuscated, contains references to URLs that are also present in the extracted IOCs, reinforcing the link-farming attack pattern. No scripts were extracted from this sample.

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://sweetestdreams.org/uploads/1/3/0/5/130589031/130589031.html#introduccion+a+los+negocios+ferrell+7ma+edicion+pdf
    • http://mcvisions.com/uploads/1/3/0/6/130620974/3682771.pdf
    • http://grassrootsmassage.com/uploads/1/3/0/5/130544043/supemakogit_rojopotemonime_mitopi.pdf
    • http://roncocamana.com/uploads/1/3/0/5/130589151/a4b3701162067.pdf
    • http://southernapartmentgroup.com/uploads/1/3/0/9/130969494/xuzip-furulika.pdf
    • http://www.stilwellsalesllc.com/uploads/1/3/0/5/130590200/157bf9b60.pdf
    • http://conneracup.com/uploads/1/3/0/6/130604154/pokonuveset.pdf
    • http://carlocornelli.com/uploads/1/3/1/0/131070078/zoruxizegoxa-xotutojorofeb-jimepodato.pdf
    • http://microneuron.com/uploads/1/3/0/3/130323422/weloxexafase-daxoka.pdf
    • http://mayahairstonslampoetry.com/uploads/1/3/0/7/130776106/9044375.pdf
    • http://restorelifemedical.org/uploads/1/3/0/6/130604207/nerim.pdf
    • http://dupuiscustomhomes.com/uploads/1/3/0/6/130604806/zafefaxajufeladofef.pdf
    • http://hinduweddingaustralia.com/uploads/1/3/0/8/130874244/demokunajamawiturup.pdf
    • http://samuelsandra.com/uploads/1/3/0/5/130550700/vexozekilurupanut.pdf
    • http://sugarmaplebooks.com/uploads/1/3/0/7/130739446/7906325.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_off00006c06.bin
1cb2c7c021a314e1eeadcc958059a0e6f3dcfe4a4964edee9354eb5e7c3122bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C06 8284 bytes

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