Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4efd3de3f7281b4…

MALICIOUS

PDF

42.2 KB Created: 2020-08-30 00:31:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3295a6e1281b0284cf0e87de7feda1a SHA-1: 270b2c9ee37420fc5bb990536e10981d1cbf71d5 SHA-256: a4efd3de3f7281b44af0ad9c7de47d1e7e89e312d126bb2ab0151d350bb10b26
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.com, which is a known malicious infrastructure. Additionally, it features a link farm of numerous external PDF links, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute content. The presence of a visual download button lure further supports the malicious intent of directing users to external, potentially harmful, content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=javascript+convert+base64+pdf+to+image
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/structure_d_un_algorithme_informatique.pdf
    • https://cdn.shopify.com/s/files/1/0429/0140/5852/files/watch_smallville_online_free_megavideo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2103/2859/files/loruvuv.pdf
    • https://cdn.shopify.com/s/files/1/0435/4369/1419/files/89205246217.pdf
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/genetics_from_genes_to_genomes_6th_edition_solutions_manual.pdf
    • https://static.usrfiles.com/ugd/7f929b_f6f906a7f5874e9ca529f2cf2358b2ab.pdf
    • https://static.usrfiles.com/ugd/1be480_210e5fe490984e1f9476595b4c82f0ef.pdf
    • https://cdn.shopify.com/s/files/1/0439/4788/4699/files/dimensional_analysis_worksheet_part_1_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5840/5271/files/hunger_games_server_pe.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a7bfa148a58420d9e372c99d0b7c051.pdf
    • https://static.usrfiles.com/ugd/0049ca_288549bc837448758f27abde38be254a.pdf
    • https://static.usrfiles.com/ugd/b8c837_a85aa1e089fd48a68b3fad5229d7176d.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_off00005b39.bin
3a64c98b1c7a380d93bfb32dca7949c0f0ee74055dae68f8133a5f7e3c959d82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B39 5872 bytes
font_01_sfnt_off00006f24.bin
9a1b532e03fe4f4447ef6fa02a8e95a10102583dfa4f557a1bfcfa19fa986021		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F24 13980 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.