Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbdde5cf9cb7707f…

MALICIOUS

PDF

44.5 KB Created: 2020-04-24 02:00:24 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 9954aec657cb378a2a82b12d61eee579 SHA-1: 0256f4632a2314a751ab7e0aac23ebabb02192d4 SHA-256: bbdde5cf9cb7707f9051b0cbc8e162dff2e303448f848b36650fd0ae9f8baa3e
92 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, with numerous external URLs pointing to other PDF files. The ML classifier strongly indicated maliciousness. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a datasheet, suggesting a social engineering pretext to encourage clicks on the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://gonelive.org/uploads/1/3/0/9/130969571/130969571.html#dell+ultrasharp+27+4k+monitor+u2718q+datasheet
    • http://brianrohm.com/uploads/1/3/0/4/130436337/6e84f18df.pdf
    • http://braidsbytor.com/uploads/1/3/0/2/130289229/koxunogepusefirede.pdf
    • http://naturecoastladyanglers.com/uploads/1/3/0/6/130621587/xebale.pdf
    • http://capricairnfarm.com/uploads/1/3/1/4/131437941/diwovutalekesi.pdf
    • http://taylormadetraveltours.com/uploads/1/3/0/2/130272569/1387776.pdf
    • http://ladybabscharters.com/uploads/1/3/0/4/130483858/famotazomijagike.pdf
    • http://rcthelabel.net/uploads/1/3/1/0/131071258/mubuwidem-rikigaziw.pdf
    • http://re-memberthemovement.org/uploads/1/3/0/9/130969428/a553d.pdf
    • http://hhrsllc.com/uploads/1/3/1/6/131607565/jerizimademawobupol.pdf
    • http://applywithbbt.net/uploads/1/3/0/5/130544898/3201482.pdf
    • http://santosfamilycleaners.com/uploads/1/3/1/6/131606020/86a814d700076.pdf
    • http://appliancerepairconsultant.com/uploads/1/3/1/0/131069890/xijerukano.pdf
    • http://taylormadetraveltours.com/uploads/1/3/0/2/130272569/
    • 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_off00007ea1.bin
bd051a3e01236310592fcef72eba3c3ade07384df02d08fc0cf239ece42f2681		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA1 11544 bytes

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