Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca0d8ad1533d4d41…

MALICIOUS

PDF

38.6 KB Created: 2020-08-12 06:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 646aaa4c5ff5c4639bec9485dc4d0d0f SHA-1: 71d36cd7d40560b32b8e651a9e0e7eca33011400 SHA-256: ca0d8ad1533d4d4150d08d54aed10595b7083e82f0c5800f6578fff7c711b18b
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external websites. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wb?keyword=philippine%20cultural%20anthropology%20pdf', which is flagged as malicious. This suggests the document is part of a link farm or SEO poisoning campaign designed to redirect users to malicious sites.

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/wb?keyword=philippine%20cultural%20anthropology%20pdf
    • http://wanak.tlblade.com/uploads/1/3/1/1/131164250/3953803.pdf
    • http://files.contracostachristianschools.org/uploads/1/3/1/4/131453998/2007720.pdf
    • http://kefenazi.taiwancarparts.com/uploads/1/3/0/8/130874038/1074585.pdf
    • http://najoji.shirtkingzcustom.com/uploads/1/3/1/1/131164250/joseturatod-tetemumepatesat.pdf
    • http://fuposubo.healthfreedomiowa.org/uploads/1/3/0/7/130738731/3248697.pdf
    • https://cdn.shopify.com/s/files/1/0438/5928/0022/files/lowes_dothan_al.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/cours_sur_automate_programmable_industriel.pdf
    • https://cdn.shopify.com/s/files/1/0429/5104/9370/files/vetusuboj.pdf
    • https://cdn.shopify.com/s/files/1/0428/5287/6455/files/20807319066.pdf
    • https://cdn.shopify.com/s/files/1/0437/9515/3058/files/16760874858.pdf
    • https://cdn.shopify.com/s/files/1/0433/6700/6364/files/93736165273.pdf
    • https://cdn.shopify.com/s/files/1/0431/0820/4708/files/demonology_warlock_icy_veins.pdf
    • https://cdn.shopify.com/s/files/1/0429/7683/7785/files/vefamatotutofasogipefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/2151/6449/files/4228993799.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8854/files/cellular_neural_networks_and_visual_computing_foundations_and_applications.pdf
    • https://cdn.shopify.com/s/files/1/0434/2874/1272/files/86551609676.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004cff.bin
26506846c09ab6df3c6527426ba37e4d46a94d7ac46cd4044d82d63951b74621
pdf-font-stream PDF embedded font (sfnt) at offset 0x4CFF 5224 bytes
font_01_sfnt_off00005eb3.bin
b7a27e9e135c71ede713057a34bb6126217b1463b8d7e7084bc3cbf9118441c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB3 9704 bytes
font_02_sfnt_off00007f51.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F51 4324 bytes