Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc3594a6ad33bff…

MALICIOUS

PDF

41.4 KB Created: 2020-08-18 18:46:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 06ea3027b1cfb03bb9ab4de88820cc78 SHA-1: 1a4b79a3a335f429a6b116462841997e8d08da12 SHA-256: fcc3594a6ad33bff50d80c72e2c9e161d93c5d0850845b2da1442e4944271cfd
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector at 'https://ttraff.ru/pify?keyword=bmw+brand+guidelines+2018+pdf'. This indicates a phishing attempt or a lure to a malicious site. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm designed to improve SEO for malicious content or to distribute further malicious links. No scripts were extracted, and the document body is heavily obfuscated, but the primary malicious intent is clear from the embedded links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=bmw+brand+guidelines+2018+pdf
    • http://segowagek.alexaharzan.com/uploads/1/3/1/0/131070450/ragijejewire.pdf
    • http://files.peachandpippin.com/uploads/1/3/1/8/131856270/ad448452920a172.pdf
    • https://cdn.shopify.com/s/files/1/0427/7462/6470/files/finibus_bonorum_et_malorum.pdf
    • https://cdn.shopify.com/s/files/1/0431/3061/8011/files/99795651293.pdf
    • https://cdn.shopify.com/s/files/1/0429/5986/3961/files/69329409162.pdf
    • http://files.cdlynn.people.ua.edu/uploads/1/3/1/3/131382243/8241403.pdf
    • https://cdn.shopify.com/s/files/1/0437/3181/2504/files/94178950905.pdf
    • https://cdn.shopify.com/s/files/1/0437/7391/9393/files/1024x768_aspect_ratio.pdf
    • https://cdn.shopify.com/s/files/1/0441/0019/0360/files/damugujasezawotofakuvotig.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8516/files/sagorepozuxofe.pdf
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/addition_to_10000_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0430/6989/8913/files/network_movie_script.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_off00006264.bin
0206dc0faf934e37f04236382c02400b486a31fe3e17e0ce76369639a768f4cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6264 6160 bytes
font_01_sfnt_off0000774e.bin
e38f954fb68df7fae83c9fa89380904e51811ce4e38ec95b5ecebee14214f925		 pdf-font-stream PDF embedded font (sfnt) at offset 0x774E 9888 bytes

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