Malicious PDF — malware analysis report

Static analysis result for SHA-256 c818c4b8cbefd726…

MALICIOUS

PDF

43.2 KB Created: 2020-04-06 07:22:55 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6ce8e427fcd7d87731e4168b2668716f SHA-1: 863f016b99d7a1e992b13de45a20220cd0392ec4 SHA-256: c818c4b8cbefd726e70606375c5819beba9d23a21a97cffd3ee8e9aa7a219125
62 Risk Score

Malware Insights

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

The PDF document was identified as malicious due to a heuristic detecting a large number of external links, characteristic of a link farm or SEO poisoning attack. The document body contains a mix of seemingly random text and embedded URLs, including 'http://pranksulting.club/uploads/1/3/0/3/130379391/130379391.html#what+does+developmental+delay+mean+in+spanish' and 'http://tw-story.com/uploads/1/3/0/6/130639379/vusem-fased-lizulodefir.pdf'. These links likely lead to phishing pages or further malware downloads.

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://pranksulting.club/uploads/1/3/0/3/130379391/130379391.html#what+does+developmental+delay+mean+in+spanish
    • http://tw-story.com/uploads/1/3/0/6/130639379/vusem-fased-lizulodefir.pdf
    • http://letgoandtidyup.com/uploads/1/3/1/1/131164446/vogagusa_lalosadu_sovagejutalira_makun.pdf
    • http://smartsupportgroup.com/uploads/1/3/0/6/130621293/piriligegilufu.pdf
    • http://neobyapps.com/uploads/1/3/1/3/131383767/dc555af4a536c.pdf
    • http://weddingsmore.net/uploads/1/3/0/9/130969435/6319288.pdf
    • http://sasurveys.org/uploads/1/3/1/4/131438091/fujewerer.pdf
    • http://atlantamoveme.com/uploads/1/3/0/7/130776239/dabubip_mirasope_zajamijadafif.pdf
    • http://angelwheeler.com/uploads/1/3/0/7/130776308/4939615.pdf
    • http://jessupart.com/uploads/1/3/1/0/131070518/kojezupadarix.pdf
    • http://silvermanadvisors.com/uploads/1/3/0/7/130776827/12e2ce39ef819d.pdf
    • http://mandarjoshi.net/uploads/1/3/0/2/130289583/babomixokivivomow.pdf
    • http://theancientpathway.net/uploads/1/3/0/2/130287318/poxowoje.pdf
    • http://safemoneyinvestment.org/uploads/1/3/0/7/130775393/1914854.pdf
    • http://pawpawlakerentals.com/uploads/1/3/1/3/131383332/9378928.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_off00007f1a.bin
dd0d060189d0d7b5ec5959d79469107a49300023f9f1e3afde00a1b5738cf109		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1A 8864 bytes

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