Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa32410014e4e69…

MALICIOUS

PDF

48.2 KB Created: 2020-08-29 18:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 677225982403bca3dacf9af1873aa1b3 SHA-1: 1971ec840ecfb2d5f7af6c3e346cdf0d3320e524 SHA-256: faa32410014e4e698eedb38fa1a6de30d18daa06342608e78e99f499ad5e9c8f
128 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to known malicious infrastructure, disguised as a software download. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing confirms this. The document body also contains a call-to-action phrase, reinforcing the lure. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a spam or SEO poisoning campaign.

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.cc/wix?keyword=coreldraw+x8+portable+espa%25C3%25B1ol+64+bit
    • https://cdn.shopify.com/s/files/1/0430/7098/0247/files/36506894037.pdf
    • https://cdn.shopify.com/s/files/1/0434/6026/4096/files/3rd_person_singular_present_tense.pdf
    • https://cdn.shopify.com/s/files/1/0429/8883/0873/files/salient_features_of_metaphysical_poetry.pdf
    • https://cdn.shopify.com/s/files/1/0435/2868/3672/files/guild_wars_2_guide_classe.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b5001339a95490ca08c62d4e3fbb7f8.pdf
    • https://static.usrfiles.com/ugd/cac9e4_d002b3d732c34b4eaa601d8a57fe356d.pdf
    • https://static.usrfiles.com/ugd/69b86f_5b9b9007f01540a1a90068579dbcdc1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_09a1505ba1864445ae4780b5e3ee6aca.pdf
    • https://static.usrfiles.com/ugd/b8c837_a2876952825b457697e95e261c323dd3.pdf
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/chlamydia_diagnosis.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3537/files/3d_photos_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0428/9524/5475/files/58429915714.pdf
    • https://cdn.shopify.com/s/files/1/0434/8762/5369/files/loribumak.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_off0000785e.bin
4ba76e3fa8b22c4867cef8912e77e19cb0a399db05aafb2a1eea29f88c3c0970		 pdf-font-stream PDF embedded font (sfnt) at offset 0x785E 5808 bytes
font_01_sfnt_off00008bff.bin
a98340d93a298207e0d1280a5c25e7a5d7d50135561705b1f36ad20c32c452c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BFF 11404 bytes

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