Malicious PDF — malware analysis report

Static analysis result for SHA-256 91729aa6944d7578…

MALICIOUS

PDF

39.1 KB Created: 2020-09-13 19:14:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4ea986f177d47f2cc103a91f705529ba SHA-1: 68db0c253da9a5ffd709b614b23db8cb3d648a26 SHA-256: 91729aa6944d7578cb476b8f0b9fe34565ec33707cee78db7e36716e9dff0b22
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. One of the embedded URLs, 'https://ttraff.link/pify?keyword=seneca+high+school+sc+football', is flagged as a malicious redirector. The document body appears to be largely obfuscated or contains minimal readable content, but the presence of numerous external links suggests a malicious intent, possibly for SEO abuse or to redirect users to further malicious sites.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.link/pify?keyword=seneca+high+school+sc+football
    • http://xofej.yosemitepet.com/uploads/1/3/1/4/131452839/7481241.pdf
    • http://zakiw.melatinungsari.com/uploads/1/3/1/4/131452954/nawikego.pdf
    • http://files.shopamityvilleapothecary.com/uploads/1/3/1/4/131406649/raxamafubuliwofuxos.pdf
    • http://files.chezhospice.org/uploads/1/3/0/8/130874585/rovewasobex-dudenexifo-garakanujuwoj-vonovafonunu.pdf
    • http://files.swanriverdressage.com/uploads/1/3/2/6/132682171/09aabdd9ccd.pdf
    • http://files.plasticactionuk.co.uk/uploads/1/3/1/0/131070849/4e31b1b71eae.pdf
    • http://files.isme-commissions.org/uploads/1/3/1/4/131454355/ca4eea9.pdf
    • http://xapigeja.his-info.com/uploads/1/3/1/4/131453028/8539858.pdf
    • http://gukoso.caritascomics.com/uploads/1/3/0/7/130775048/ff6e95f6ad.pdf
    • http://files.adamosabelli.com/uploads/1/3/2/6/132683357/6cbdf8d64652ef.pdf
    • http://files.sweetpapercreations.com/uploads/1/3/2/6/132696274/surenu_fonoboweja_lotomarifukup_sugiki.pdf
    • http://files.chatteriemainecoonroswell.com/uploads/1/3/0/9/130969790/bagonosivujeta.pdf
    • https://static.usrfiles.com/ugd/b8c837_853327562298494eaa99db4a50b10a37.pdf
    • https://static.usrfiles.com/ugd/8c2e83_94340e9c2fa14de3bb03d48875f0414a.pdf
    • https://static.usrfiles.com/ugd/d017d5_4f7c0251ed424f0a88c6d7e74d067188.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_off000059ee.bin
45536ec21ea79231af8f2fe18bf122173f9fe05dfb653225da6f0b16c74d21a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59EE 5292 bytes
font_01_sfnt_off00006bf5.bin
66f51c3f40e49e3f1ed20f20aee5cf70603c240ad4cf7312669d84b685ee9f83		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF5 10408 bytes

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