Malicious PDF — malware analysis report

Static analysis result for SHA-256 8552f01a842ed9d1…

MALICIOUS

PDF

46.8 KB Created: 2020-04-21 01:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 80e4aae29804f46725ac91a0f0753df9 SHA-1: 56ebeff3153ce24bdc198896fc4b97ffed087585 SHA-256: 8552f01a842ed9d199f40016d61a2930fcadf5fc7b254f8e36cda5cfebcf9788
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 by the PDF_SEO_LINK_FARM heuristic, suggesting it is designed to direct users to a network of websites. The embedded URLs and the document body, though heavily obfuscated, contain references to 'date format javascript milliseconds' and are generated by wkhtmltopdf, indicating a potential attempt to manipulate search engine results or redirect users to 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://drpatty.net/uploads/1/3/0/6/130620645/130620645.html#date+format+javascript+milliseconds
    • http://innovationleadershipllc.com/uploads/1/3/0/6/130620712/fd6eebd705357.pdf
    • http://avilabankruptcylaw.com/uploads/1/3/0/2/130289177/timepamidub.pdf
    • http://floatdisplays.com/uploads/1/3/0/7/130739781/8137470.pdf
    • http://hsupinhsiang.com/uploads/1/3/0/6/130604910/3510094.pdf
    • http://ipmofwa.com/uploads/1/3/0/2/130271157/917a8.pdf
    • http://drbarrnd.com/uploads/1/3/1/4/131438747/73eb45.pdf
    • http://myforgottenself.com/uploads/1/3/1/4/131483391/xikukabag.pdf
    • http://123scr.com/uploads/1/3/0/7/130776006/putupuzaval_gabomi_kiwosenutut_pakotixazigogir.pdf
    • http://sittingprettyspa.net/uploads/1/3/0/7/130739377/votalob.pdf
    • http://newingtonwes.org/uploads/1/3/0/2/130287456/sadiwavogo.pdf
    • http://poppysclothingco.com/uploads/1/3/0/4/130477702/xefapasejizejoj-ziwoxezav.pdf
    • http://flsfilms.com/uploads/1/3/1/4/131407361/f92b9157df2.pdf
    • http://linemenperformance.com/uploads/1/3/0/6/130620327/kerefadefig_legutafa_fegujo_wenegib.pdf
    • http://foursomes4philanthropy.com/uploads/1/3/0/7/130739651/lemetef-bujogir-pufup-fedupapal.pdf
    • http://123scr.com/uploads/1/3/0/7/130776006/putupuzaval_
    • 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_off00008c38.bin
8cf990252a49b4b4a3071fcaeeb0e240191cc2ba04383d3fb473536abf22be76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C38 9084 bytes

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