Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee42378fa4300f1f…

MALICIOUS

PDF

39.0 KB Created: 2020-08-03 04:40:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f4de51553ff731ff8fd0b40335216cb SHA-1: 9fe79cf59b0e570a616ca16ca85cab5fb8572a3a SHA-256: ee42378fa4300f1fab9f24612d18d2f31ab208f506efb6b24a9f1d227edeeacb
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=50+shades+of+grey+book+free+download'. This URL is presented within the document body, disguised as a free book download, and likely leads to a malicious payload. The PDF also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, suggesting an attempt to manipulate search engine results or distribute content. No scripts were extracted from this sample.

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/pify?keyword=50+shades+of+grey+book+free+download
    • http://files.mygrapplingvideo.com/uploads/1/3/2/6/132695732/ronoloposeku-ganir.pdf
    • http://files.southeastfinancialcenter.com/uploads/1/3/0/7/130776499/54d2b366.pdf
    • http://files.reading2reading.com/uploads/1/3/0/9/130969555/49253ecafb.pdf
    • https://cdn.shopify.com/s/files/1/0429/1382/4927/files/nudivus.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0503/files/63410762847.pdf
    • https://cdn.shopify.com/s/files/1/0431/1334/9273/files/menugisori.pdf
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/sennheiser_tr120_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/6997/1363/files/jidelaliweboru.pdf
    • https://cdn.shopify.com/s/files/1/0434/4479/7600/files/semariramalozi.pdf
    • https://cdn.shopify.com/s/files/1/0437/8905/8206/files/kepadufananoxipekokafasi.pdf
    • https://cdn.shopify.com/s/files/1/0429/5393/2966/files/32908773157.pdf
    • https://cdn.shopify.com/s/files/1/0428/3216/7068/files/mivibijurimebibemub.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/galesabizuweguxum.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0820/files/4247829933.pdf
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/55992814467.pdf
    • https://cdn.shopify.com/s/files/1/0435/3572/8794/files/jovizajiti.pdf
    • https://cdn.shopify.com/s/files/1/0435/3848/1311/files/48421775802.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/97246925398.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_off00005858.bin
6504479d39a5b3b34836e69a4dce244f015a0453aa764acce8aea622a97b2c43
pdf-font-stream PDF embedded font (sfnt) at offset 0x5858 5736 bytes
font_01_sfnt_off00006bf4.bin
2b8fd816f44f6d2e5596d165bec918fb10a687b64f1934638f2295442d26512b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF4 10284 bytes