Malicious PDF — malware analysis report

Static analysis result for SHA-256 9003a2c9112445a9…

MALICIOUS

PDF

42.9 KB Created: 2020-03-31 00:01:51 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 63e6c5226b3d78f9ef6fac4241653a4f SHA-1: 790ce25b0a0b6572e5e491700bb5c49bb016b5aa SHA-256: 9003a2c9112445a98fa8f87b20882101996af80c5d079fee452600ea971d70eb
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links, a technique often used for SEO manipulation or to distribute malicious content. The heuristic 'PDF_SEO_LINK_FARM' specifically flags this behavior, indicating a mass of external PDF links pointing to a dominant host. The document body, though partially corrupted, contains references to 'Arduino starter kit project book' and metadata suggesting it was generated by wkhtmltopdf, which could be a lure or part of the SEO spam. 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://sunsetflooringco.com/uploads/1/3/1/4/131453657/131453657.html#arduino+starter+kit+project+book
    • http://small-product-photography.com/uploads/1/3/0/2/130288545/9116070.pdf
    • http://gbmgreatbusinessmarketing.com/uploads/1/3/0/3/130313192/jakekapexurol.pdf
    • http://dantearthurs.com/uploads/1/3/0/6/130621956/nevagemejemipapiwodu.pdf
    • http://vinylalbumwallart.com/uploads/1/3/0/6/130604014/liwosamufakabav.pdf
    • http://nourishwithcassi.com/uploads/1/3/0/4/130483346/fuposujoranimut.pdf
    • http://edwarddmcmanus.com/uploads/1/3/0/6/130621095/983877.pdf
    • http://ottersedgefarmhoptrellis.com/uploads/1/3/1/0/131071111/dewigixagelapusupago.pdf
    • http://leosatraining.com/uploads/1/3/0/7/130776514/jovawogefujuru-razezabimugaje-tuvuwejosiku.pdf
    • http://ia-acme.org/uploads/1/3/0/6/130604141/409d530c6a946d2.pdf
    • http://beautyproducts.business/uploads/1/3/0/6/130639891/8311cc83.pdf
    • http://couverture.org/uploads/1/3/0/7/130740146/xilemokovovidufem.pdf
    • http://kinseylloydltd.com/uploads/1/3/1/4/131453718/094eb5542.pdf
    • http://friendsoflakebarkley.com/uploads/1/3/0/7/130739923/6524351.pdf
    • http://aquinasenglish.com/uploads/1/3/0/7/130739287/gavorepokudim.pdf
    • http://todosuma.info/uploads/1/3/0/8/130813332/giwikamabesu_fokuwamebidef_tififadusi.pdf
    • http://threegenerationstravel.com/uploads/1/3/0/6/130620337/7440628.pdf
    • http://trattorianinaarlingto.com/uploads/1/3/1/4/131453657/ab97d4c1e18fb.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007421.bin
60bc6e323b7c67615df4b48eea89935aba3d2eac9440f30d8f80d19f7e42dad4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7421 7752 bytes
font_01_sfnt_off00009268.bin
cfb3357b20fb01955c1e4a0ed568c791e3a97db8f0fbaa18432a833eaa1d19da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9268 2828 bytes

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