Malicious PDF — malware analysis report

Static analysis result for SHA-256 992d083ce6ba2956…

MALICIOUS

PDF

36.9 KB Created: 2020-08-12 08:57:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7625fa0205211cd024f12194bd4c4bba SHA-1: 31738927df5e90dc6c59964de28e9657c8e25bef SHA-256: 992d083ce6ba2956bd9f8b2c62bd21ca2b371c9b8b9f59c6aba476d696fda51c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting an attempt to manipulate search results or distribute malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=brake+test+on+dc+shunt+motor+theory+pdf, which is likely used to redirect users to a harmful destination.

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.com/pify?keyword=brake+test+on+dc+shunt+motor+theory+pdf
    • http://files.capturedgravityphotography.com/uploads/1/3/2/8/132814949/debatirutewasepifi.pdf
    • http://nubotowo.celestinevessel.com/uploads/1/3/1/4/131453574/ee2404.pdf
    • http://files.scriptwriters-houston.org/uploads/1/3/1/8/131856086/b10f2cf.pdf
    • https://cdn.shopify.com/s/files/1/0433/3309/1480/files/jolozumuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/5832/3865/files/tejopipiwefarin.pdf
    • https://cdn.shopify.com/s/files/1/0432/4130/8320/files/97750859423.pdf
    • https://cdn.shopify.com/s/files/1/0435/2190/0696/files/ranij.pdf
    • https://cdn.shopify.com/s/files/1/0432/6552/3870/files/livro_compreendendo_o_behaviorismo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5594/6655/files/dieta_astringente_menu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5956/9055/files/18045027481.pdf
    • https://cdn.shopify.com/s/files/1/0436/9586/6024/files/perifemexutut.pdf
    • https://cdn.shopify.com/s/files/1/0434/7602/5510/files/75916974887.pdf
    • https://cdn.shopify.com/s/files/1/0429/9993/9235/files/nenozowizebomojigixo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdf
    • https://cdn.shopify.com/s/files/1/0428/6991/5814/files/substitution_and_ellipsis_exercises.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_off0000523b.bin
0dd622110f4b0718cf381dcb43d49097c7dd4ecb7af882d50f93fd9f030eccbf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x523B 5576 bytes
font_01_sfnt_off0000650b.bin
a3ac30c23a414d95b7388c1ed4abf33e54adf6e4914866dbd87a215d33ccea74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x650B 9828 bytes

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