Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3a49526fcbd09f5…

MALICIOUS

PDF

39.8 KB Created: 2020-08-29 01:28:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ed5f4d8a8d29cdfd24033d88f52cc62 SHA-1: a15878439673e6f8d673f54576ffc7d408a65d56 SHA-256: e3a49526fcbd09f5841894f934fe3589c052e6c92fadfaecd7cb031ded42d2c7
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one pointing to a known malicious redirector. The document body is heavily obfuscated but contains the malicious URL. The presence of a large link farm suggests an attempt to manipulate search engine results or distribute malicious content through a network of linked documents.

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/wix?keyword=anlat%25C4%25B1mda+bak%25C4%25B1%25C5%259F+a%25C3%25A7%25C4%25B1lar%25C4%25B1
    • https://static.usrfiles.com/ugd/b8c837_feaca2158ed345b5a23ce8cb5d1b11aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf91498ea48742079480099e6ea22503.pdf
    • https://static.usrfiles.com/ugd/b8c837_f0364a0c79614c7c8e994394df21ac15.pdf
    • https://cdn.shopify.com/s/files/1/0437/2329/2822/files/54692915015.pdf
    • https://cdn.shopify.com/s/files/1/0435/5565/1743/files/portfolio_template_canva.pdf
    • https://static.usrfiles.com/ugd/b8c837_fe8f302857a94cf19bec3f85718177bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_95e3fd9b63754def9f9f155dcc2c4c7c.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a646338c86f4a83885676201460208a.pdf
    • https://static.usrfiles.com/ugd/b8c837_25d91c7bdb5b46f9a90f6ebb338b124c.pdf
    • https://cdn.shopify.com/s/files/1/0434/5472/6310/files/81208800819.pdf
    • https://cdn.shopify.com/s/files/1/0434/7022/5558/files/detroit_become_human_pc_size.pdf
    • https://cdn.shopify.com/s/files/1/0448/4435/1649/files/albert_speer_architecture.pdf
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/31991869868.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_off00005b26.bin
649719522c7fbbe07b53e34964b4e034f355920d6380c9da68442078a811966f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B26 5448 bytes
font_01_sfnt_off00006d56.bin
a829afb8a700cad66637bbc55c60150babf36c66834ffd9828258c1aef33fc86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D56 11372 bytes

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