Malicious PDF — malware analysis report

Static analysis result for SHA-256 818b8965c46e4b49…

MALICIOUS

PDF

38.2 KB Created: 2020-03-28 08:00:19 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 5c0d50c0e18e260d6edf4f6ac7b93be5 SHA-1: 19ea8696be61b4836e02e0d1616b64824b0a76ed SHA-256: 818b8965c46e4b4957c30271c6fc21e570499b57affa84ef8dc313c36f3ecd32
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. The document body, though partially corrupted, contains a URL that points to a collection of other PDF files. This suggests the primary purpose is to redirect users to a network of external resources, potentially for SEO manipulation or to host malicious content. 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://bughunters.eu/uploads/1/3/0/7/130739404/130739404.html#5+ejemplos+de+enunciados+declarativos+afirmativos
    • http://vhcministry.org/uploads/1/3/0/6/130639851/9920297.pdf
    • http://playinaustin.com/uploads/1/3/0/3/130379363/jusitokojepefala.pdf
    • http://silkandsatin.com/uploads/1/3/0/8/130813398/2240139.pdf
    • http://orlandohobbyshop.com/uploads/1/3/0/4/130476004/5019133.pdf
    • http://illuminationwellnessnc.com/uploads/1/3/0/2/130288682/puzen.pdf
    • http://assurantedu.com/uploads/1/3/0/5/130551653/funale.pdf
    • http://megangingocounseling.com/uploads/1/3/0/5/130588754/f985f1353ac.pdf
    • http://dv8fashionsllc.net/uploads/1/3/0/7/130775592/gufisezusaluba_vobigovexe.pdf
    • http://drkmoonradio.com/uploads/1/3/0/5/130541743/5a72f27fcffb.pdf
    • http://lovacollection.com/uploads/1/3/0/5/130590458/rikurowinumafesawij.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_off00006b16.bin
7f8cd6a90997549297a09da4043b09876685365841278785bc1b3b091adcfc72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B16 8536 bytes

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