Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6d0cad6d417dc09…

MALICIOUS

PDF

45.1 KB Created: 2020-09-08 22:45:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f1cad86c8d64f4ba48c0d752fa02a4c SHA-1: 6551af40ff378b567faabf728defd3935ddf6d42 SHA-256: f6d0cad6d417dc09976e93b990b811951dd87a364d0124f706d71e46fa356a51
152 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a download for 'Beyblade burst mod apk latest version'. This link, 'https://ttraff.link/wix?keyword=beyblade+burst+mod+apk+latest+version', is flagged as a malicious redirector. The document body is heavily obfuscated but contains the malicious URL and references to the game mod, indicating a lure for users seeking the mod. The presence of numerous other benign-looking PDF links suggests a link farm or SEO poisoning tactic to increase visibility.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.link/wix?keyword=beyblade+burst+mod+apk+latest+version
    • https://cdn.shopify.com/s/files/1/0429/7926/2615/files/alpha_omega_carseat_manual.pdf
    • https://cdn.shopify.com/s/files/1/0462/5534/1717/files/business_plan_canvas_francais.pdf
    • https://cdn.shopify.com/s/files/1/0434/9224/5666/files/18913869375.pdf
    • https://cdn.shopify.com/s/files/1/0465/2367/8878/files/tiwidosoduxujonebuvujupox.pdf
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/dalatixulino.pdf
    • https://static.usrfiles.com/ugd/3de8a6_58754989aed34c21a8b83b6ba3aecedc.pdf
    • https://static.usrfiles.com/ugd/ee4a13_498beb0f6cd34e819b41f98ed6409b04.pdf
    • https://cdn.shopify.com/s/files/1/0432/6224/7075/files/japanese_childrens_books_in_hiragana.pdf
    • https://cdn.shopify.com/s/files/1/0438/5269/3654/files/64593147554.pdf
    • https://cdn.shopify.com/s/files/1/0464/1783/8248/files/advt_12_2019_hssc.pdf
    • https://cdn.shopify.com/s/files/1/0429/5901/2006/files/51991226775.pdf
    • https://static.usrfiles.com/ugd/1d5a3f_826fc50b946d4b3b9b44fe63f9687c54.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_05ec1d6e8e304e038d1602e3b621a70d.pdf
    • https://static.usrfiles.com/ugd/dfb5f8_2f9c2814f2174ed3a737fa6f7dd28851.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_off000066ca.bin
207e2034c8d35d1fb9c7f67ae86beee521dc625b4175815f55a5a4f57520a188
pdf-font-stream PDF embedded font (sfnt) at offset 0x66CA 5520 bytes
font_01_sfnt_off0000797e.bin
795924096ec8b23eba136fd8999288d0a65db20cf790f1c0a831a2190b6e6ae3
pdf-font-stream PDF embedded font (sfnt) at offset 0x797E 14772 bytes