Malicious PDF — malware analysis report

Static analysis result for SHA-256 a86309cda9f5e996…

MALICIOUS

PDF

39.4 KB Created: 2020-08-17 11:46:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 827e2ddb38b7182b7a277620a0cf78b3 SHA-1: 13bab116d6adeb9c0bdf54b681255e5a229cd110 SHA-256: a86309cda9f5e99683ace3c4398431efcd4775e5f8d9cf7360782cc7426104c9
128 Risk Score

Malware Insights

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

The PDF contains a deceptive call-to-action for a 'lookbook fashion template' and embeds numerous links. One of these links, 'https://ttraff.ru/pify?keyword=lookbook+fashion+template', is identified as a malicious redirector. The document also exhibits characteristics of a link farm, with many embedded URLs pointing to external PDFs, some of which are hosted on potentially malicious domains. The presence of a download button lure further supports the malicious intent.

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.ru/pify?keyword=lookbook+fashion+template
    • http://garifikas.gnarwhallaby.com/uploads/1/3/0/7/130738531/tibapefeduz.pdf
    • http://files.jejureads.com/uploads/1/3/0/7/130775635/761acf.pdf
    • http://files.katarinatuffvesonjensen.com/uploads/1/3/1/4/131453990/9119646.pdf
    • http://files.journeywiththeseasons.com/uploads/1/3/1/3/131383613/lujibawuputak.pdf
    • https://cdn.shopify.com/s/files/1/0432/6529/4504/files/68898944417.pdf
    • https://cdn.shopify.com/s/files/1/0428/8672/5799/files/brainstorming_definition.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7746/files/exe_has_stopped_working_meme.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/77915487379.pdf
    • https://cdn.shopify.com/s/files/1/0431/8360/3873/files/zurebilonagerosapu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3018/4098/files/durable_power_of_attorney_mississippi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9311/5558/files/fufitarujap.pdf
    • https://cdn.shopify.com/s/files/1/0431/7043/1125/files/23170378848.pdf
    • https://cdn.shopify.com/s/files/1/0434/6537/5908/files/20144126205.pdf
    • https://cdn.shopify.com/s/files/1/0432/6077/2510/files/consecuencias_del_alcoholismo_en_la_adolescencia.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_off00005d46.bin
463e973bf6a030cce8da7bf3461878304f5b9fdf9a4c266c9d27a4359b2acb59
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D46 5188 bytes
font_01_sfnt_off00006ec6.bin
ced7eeb057fa47d6efed5d880ca6d1a5453be4be7641e10bde592fcefee3bcc1
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC6 10012 bytes