Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbcedd441d60d695…

MALICIOUS

PDF

41.6 KB Created: 2020-08-22 08:41:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eb359eace0828ef82eeb97df18ff47cc SHA-1: 652551b18f5f5d7664ca38905db976fc2dce34fd SHA-256: fbcedd441d60d695c8cabe0139b153fb2fccc1900826a739c4773a2a55224a6e
130 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'NHS cervical screening programme guidelines' and includes the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a visual download button further supports a malicious workflow.

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/pify?keyword=nhs+cervical+screening+programme+guidelines+pdf
    • http://files.avialinn.com/uploads/1/3/1/4/131453588/31a4f88.pdf
    • http://taxilafug.teachmeetnsw.net/uploads/1/3/0/8/130874601/d2f605a84089.pdf
    • https://cdn.shopify.com/s/files/1/0437/0097/7816/files/notiwekatepesazezak.pdf
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/28403802577.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/built_with_science_intermediate_shred.pdf
    • https://cdn.shopify.com/s/files/1/0448/1050/2310/files/balancing_redox_reaction_in_acidic_medium.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/xiwusepemekano.pdf
    • https://cdn.shopify.com/s/files/1/0434/3198/5309/files/pneumatic_cylinder_parts.pdf
    • https://cdn.shopify.com/s/files/1/0454/5937/4230/files/lego_cmf_disney_series_2_feel_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1085/files/papejevo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1775/5034/files/milopus.pdf
    • https://cdn.shopify.com/s/files/1/0427/6640/1692/files/31447672942.pdf
    • https://cdn.shopify.com/s/files/1/0437/5982/9149/files/god_of_war_ps4_guide_book.pdf
    • https://cdn.shopify.com/s/files/1/0428/2040/3356/files/32991194121.pdf
    • https://cdn.shopify.com/s/files/1/0435/7285/4939/files/lua_c_roblox_scripts.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_off00006501.bin
113d4515bebe6ebe18340438a5eee9621d3be7c37f7f45e343e8346adf83edcb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6501 5600 bytes
font_01_sfnt_off000077e0.bin
fdb5cbf1822321b56bd5642b251bef4d7e56e05a9ad762032e34a8b143f46eaa
pdf-font-stream PDF embedded font (sfnt) at offset 0x77E0 9852 bytes