Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4d95141ab6af539…

MALICIOUS

PDF

37.0 KB Created: 2020-08-18 14:14:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 617d4cad9325c71115bda3a310a10c6f SHA-1: 2d50dbe348eb9d224c495c1869c17de50caa5fb4 SHA-256: d4d95141ab6af539acff00e010d2ee1ae69ce5ddf3aa6c73ed3aad3a218a3b14
120 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'Wetherspoons chicken club menu' and embeds a link to a known malicious redirector at `https://ttraff.com/pify?keyword=wetherspoons+chicken+club+menu+pdf`. The heuristic `PDF_MALICIOUS_REDIRECTOR_LINK` confirms this malicious redirection. Additionally, the `PDF_SEO_LINK_FARM` heuristic indicates the presence of numerous external PDF links, suggesting a tactic to distribute malicious content or manipulate search engine results. No scripts were extracted, and the document body is heavily obfuscated, but the primary intent appears to be directing users to a malicious site.

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=wetherspoons+chicken+club+menu+pdf
    • http://files.midcoastcac.org/uploads/1/3/1/4/131454699/xurekikom.pdf
    • http://files.richardlowenyc.com/uploads/1/3/0/7/130739926/ferodowefuvuwe_gabitamotonopo_gewavit.pdf
    • http://lujod.commercialbondstexas.com/uploads/1/3/2/7/132740405/katonikubufifus.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/87781517176.pdf
    • https://cdn.shopify.com/s/files/1/0432/2941/3544/files/propiedades_del_cascaron_de_huevo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/lanibeberipuboxomufek.pdf
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/jujeselakat.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2807/files/67946503401.pdf
    • https://cdn.shopify.com/s/files/1/0435/6879/1713/files/46811349741.pdf
    • https://cdn.shopify.com/s/files/1/0428/9980/0217/files/26899888213.pdf
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/63091301453.pdf
    • https://cdn.shopify.com/s/files/1/0431/7039/8368/files/bend_it_like_beckham_script.pdf
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/gelit.pdf
    • https://cdn.shopify.com/s/files/1/0432/4940/2016/files/25652914421.pdf
    • https://cdn.shopify.com/s/files/1/0435/0512/3493/files/alfonsina_y_el_mar_vivian_tabbush.pdf
    • https://cdn.shopify.com/s/files/1/0437/4393/6673/files/macos_can_t_repair_the_disk.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_off000053f5.bin
37d0bef00ab9ca05bf93a2b735302e94d5d768db76e88db63cb54752bdc5d22c
pdf-font-stream PDF embedded font (sfnt) at offset 0x53F5 5400 bytes
font_01_sfnt_off0000662f.bin
386fe71d9d559eef3a8f27a602ffe37a0a512daf8b5cd3ab600147aa1de967f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x662F 9632 bytes