Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cc48079ed24148c…

MALICIOUS

PDF

38.6 KB Created: 2020-08-11 15:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d18fc2ddcfcb5ba8af8a640b9e3f4b3 SHA-1: 6fcfb3f191fc3f944a8f93e02972fa925992d360 SHA-256: 9cc48079ed24148cd9826c65eb225c7a670bd48eff8203edf7feffad0e86b6f9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for 'aldine isd calendar pdf'. The primary attack vector is likely a phishing attempt to redirect users to malicious content via the provided link.

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.cc/pify?keyword=aldine+isd+calendar+pdf
    • http://files.bate-field.com/uploads/1/3/1/3/131398133/womuj.pdf
    • http://files.huskermotorsports.com/uploads/1/3/1/3/131379801/15e634.pdf
    • http://files.affordingsurrogacy.com/uploads/1/3/1/1/131164048/xezimepuma_matez.pdf
    • http://files.ohiomorganhorse.com/uploads/1/3/2/6/132682739/zosaramojarilet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/36095293784.pdf
    • https://cdn.shopify.com/s/files/1/0430/5177/8197/files/catholic_latin_prayer_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/1459/4464/files/vugujinax.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/sony_explode_car_stereo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7069/3284/files/40683743939.pdf
    • https://cdn.shopify.com/s/files/1/0432/2017/2960/files/best_reader_android_no_ads.pdf
    • https://cdn.shopify.com/s/files/1/0434/6662/1094/files/63554541026.pdf
    • https://cdn.shopify.com/s/files/1/0431/6125/6091/files/rapejipupexadapozanu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1266/9089/files/togutipuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/3676/9437/files/vetukonesufokudupagipor.pdf
    • https://cdn.shopify.com/s/files/1/0432/1535/6067/files/cpr_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/jiwalazagelokafexatekewim.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_off00005971.bin
ae4fc8ed9e1c4a9c25c3c7d5a12e1697b438aab1ec5e600b2b741dcc13abb751		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5971 5140 bytes
font_01_sfnt_off00006aec.bin
e94537687944514922fc8931c263b7b5355671a69377febdb19bef21286db728		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEC 10256 bytes

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