Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cef46fc932afb2e…

MALICIOUS

PDF

50.1 KB Created: 2020-08-21 19:49:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2595cb18b40313f4b511226fec8ee70 SHA-1: 262e7e6ecee1af116004f4d42dbb57ddc60b1910 SHA-256: 2cef46fc932afb2e7f9d1c579e963c34ade32784f2f98519f4ede61d6cbc5589
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document is designed to redirect users to malicious sites. The PDF also contains a link farm heuristic, suggesting it's part of a larger SEO poisoning or link distribution scheme. The embedded URL 'https://ttraff.com/pify?keyword=frozen+piano+sheet+music+free+printable' is the primary indicator of malicious intent, likely serving as a lure for further malicious activity.

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/pify?keyword=frozen+piano+sheet+music+free+printable
    • http://files.propertiesbypaula.com/uploads/1/3/0/7/130739265/2722954.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/1769901719.pdf
    • https://cdn.shopify.com/s/files/1/0438/3532/6624/files/irkutsk_oil_company_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0439/2160/4763/files/95817015665.pdf
    • https://cdn.shopify.com/s/files/1/0450/3250/5502/files/44378075591.pdf
    • https://cdn.shopify.com/s/files/1/0437/7087/1970/files/magazine_street_shopping_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/3903/8360/files/bidding_strategy_in_construction.pdf
    • https://cdn.shopify.com/s/files/1/0429/5114/7676/files/70869794349.pdf
    • https://cdn.shopify.com/s/files/1/0430/8349/7621/files/ap_literature_and_composition_textbook.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000707b.bin
d54e0f3d2c9976a6d659a296a1200d94258eaafa75d4692cfc975aee769dacb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x707B 5400 bytes
font_01_sfnt_off000082ac.bin
ba06d9c42f6138ad81f409c7bc4147c2dbc8fa674e75e304d7c8eb0f7b2308a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82AC 10560 bytes
font_02_sfnt_off0000a6d8.bin
84650fe671c70ac66f3af0994468c9b9feb42d01905b0f030d5781e095ef8e52		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6D8 16100 bytes

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