Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0610ed533c07f30…

MALICIOUS

PDF

72.9 KB Created: 2020-08-30 14:31:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: afa3eb41b188824f3019189e7a6e2bac SHA-1: 21a6027ed52d4315f2bda1e30f3b6f94c65e5354 SHA-256: f0610ed533c07f30e4b6994048341621d5d9096a92261e06e9b2fa3579411ed0
150 Risk Score

Malware Insights

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

The PDF contains a prominent link that, when clicked, redirects to a URL associated with malicious redirector infrastructure. The document body text, though heavily obfuscated, contains the same malicious URL and keywords related to a video game product key, suggesting a social engineering lure. The PDF was flagged by a machine learning model and heuristics indicating it is a malicious redirector and part of a link farm.

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.com/wix?keyword=street+fighter+x+tekken+product+key+for+windows+live
    • https://cdn.shopify.com/s/files/1/0428/0533/0083/files/tuck_everlasting_chapter_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/0168/2843/files/pathogenesis_of_recurrent_aphthous_stomatitis.pdf
    • https://cdn.shopify.com/s/files/1/0461/3609/8969/files/fasozezavaguketogurenix.pdf
    • https://static.usrfiles.com/ugd/b8c837_394a5068d7e449e1b1c9c88527e82da4.pdf
    • https://static.usrfiles.com/ugd/19103d_ba4292bafcdc41fe9a5f6991e21d182a.pdf
    • https://static.usrfiles.com/ugd/b7306e_8494bb3725af4e5aa4c1c1fda57bbddb.pdf
    • https://static.usrfiles.com/ugd/8b2c09_18e78721391e426396d4a22bb8158dbb.pdf
    • https://static.usrfiles.com/ugd/b8c837_5eb25f9902e447c89147184e0b68948f.pdf
    • https://static.usrfiles.com/ugd/9421c8_0ea77f2921ab44f7815fe125f82ab2f6.pdf
    • https://cdn.shopify.com/s/files/1/0428/5405/6095/files/plasma_cutter_guide.pdf
    • https://cdn.shopify.com/s/files/1/0438/4410/8445/files/bolupirovubewepaxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2950/files/antilog_table_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/3626/2052/files/tipos_de_clases_sociales_en_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0429/0579/6774/files/batelonopikumidunogopa.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_off0000df6a.bin
f475d57bf52b33dff16efac90b773144b8cf290226318d002267d36796950941		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6A 5696 bytes
font_01_sfnt_off0000f2ed.bin
104c746a4e8ce3a4927ede4fc549285b7d4ca8cd98c5dd679510d1a6c0b9cec9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2ED 10376 bytes

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