Malicious PDF — malware analysis report

Static analysis result for SHA-256 dacf09bab1f98379…

MALICIOUS

PDF

49.9 KB Created: 2020-03-23 14:24:29 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4fc229885fa4584a5771d7054040af00 SHA-1: 49109ac55e1204b26d84c3d0c97c20f76525165d SHA-256: dacf09bab1f98379c12a8b32777790694034b3ab94ad9c069ef89b73592a54c4
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 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 embedded document body text, though partially corrupted, includes a reference to 'la primavera silenciosa rachel carson pdf' and the authoring application 'wkhtmltopdf', suggesting a potential lure or disguise. The primary function appears to be hosting a large collection of links, likely to distribute further malicious content or manipulate search engine results.

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://jcitaipei.org/uploads/1/3/0/6/130604756/130604756.html#la+primavera+silenciosa+rachel+carson+pdf
    • http://www.gardenstatemarketing.com/uploads/1/3/0/5/130589189/tirawinederuxeje.pdf
    • http://webmail.lavalstgermain.com/uploads/1/3/0/6/130604255/4076921.pdf
    • http://boystownseries.com/uploads/1/3/0/6/130622000/3847732.pdf
    • http://eatbreatherun.com/uploads/1/3/0/2/130287488/litelake.pdf
    • http://doughydad.com/uploads/1/3/0/6/130603909/gaginalewavevo-lewon-kifutap-vujulamaxojix.pdf
    • http://southerndes.net/uploads/1/3/0/7/130740026/tufavaxalixidemim.pdf
    • http://www.clivemaddison.com/uploads/1/3/0/9/130969076/jikola.pdf
    • http://graceholland.net/uploads/1/3/0/6/130604304/vijokapo.pdf
    • http://vibramhk100.com/uploads/1/3/0/7/130740483/1af301a1f.pdf
    • http://greenerontheothersidegardenservices.com/uploads/1/3/0/9/130969852/5ada89474f5fc.pdf
    • http://www.phillipsroom18.com/uploads/1/3/0/6/130603867/3632144.pdf
    • http://cannabonita.net/uploads/1/3/0/8/130873917/5974135.pdf
    • http://yogatreeproject.com.au/uploads/1/3/0/6/130639038/xizatokelisat-moselaje.pdf
    • http://116pinehill.com/uploads/1/3/0/8/130814871/xiwolutowo.pdf
    • http://cheapredwine.net/uploads/1/3/0/5/130590233/7041765.pdf
    • http://mvfausses.com/uploads/1/3/0/3/130313177/mojavewokelag_vatukarixudaz_vixoxaledikex_wilajimepozu.pdf
    • http://pemcrew.blog/uploads/1/3/0/3/130313178/wevitowuwi.pdf
    • http://webdisk.fiinifleda.fi/uploads/1/3/0/5/130543878/fumose-livojipadijadi-lametosazevoror-gutodev.pdf
    • http://tandl-inter.com/uploads/1/3/0/3/130313494/sadoxax_xogatotegiwape_tisolowitin.pdf
    • http://eemption.com/uploads/1/3/0/5/130589056/tadixurapaxiroxiw.pdf
    • http://livingobservatory.us/uploads/1/3/0/6/130639221/renuzafufizuvezasug.pdf
    • http://kyuto.pt/uploads/1/3/0/7/130738707/1575201.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007775.bin
710e358a92668701edbb2e47ae8b6d9f3d7b3b220535beb971359fa974b4f4c6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7775 9324 bytes
font_01_sfnt_off00009926.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc
pdf-font-stream PDF embedded font (sfnt) at offset 0x9926 2652 bytes
font_02_sfnt_off0000a28d.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0xA28D 16036 bytes