Malicious PDF — malware analysis report

Static analysis result for SHA-256 3301ecb5ee95a2bc…

MALICIOUS

PDF

41.6 KB Created: 2020-08-31 06:30:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 876e1e1f79252f9dce4431b1aafaf983 SHA-1: 05c778104388f6a2dcc98355e5cf78d5cd891dff SHA-256: 3301ecb5ee95a2bcba6783191e1ad43caa591343b76d24f93c93415c705c33b3
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 resources. One critical heuristic firing indicates a malicious redirector link to 'ttraff.com', suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, contains text related to 'Colegio waldorf limache mensualidad', implying a lure for payment or fee-related information. The presence of numerous links, including a malicious redirector, strongly suggests an attempt to drive 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/wix?keyword=colegio+waldorf+limache+mensualidad
    • https://cdn.shopify.com/s/files/1/0440/5939/4213/files/18447008775.pdf
    • https://cdn.shopify.com/s/files/1/0434/4040/6684/files/77331849634.pdf
    • https://cdn.shopify.com/s/files/1/0443/8360/0806/files/50743630068.pdf
    • https://cdn.shopify.com/s/files/1/0461/6752/3491/files/dovozijaduwejimipipo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3126/files/megudibiw.pdf
    • https://static.usrfiles.com/ugd/ae059d_f7556886925e44b39539b1d8a7648a19.pdf
    • https://static.usrfiles.com/ugd/451461_b7e2b7f71edd4ec4a75b89f338401abd.pdf
    • https://static.usrfiles.com/ugd/b8c837_64a5360b754243ffa1bec505528476f8.pdf
    • https://static.usrfiles.com/ugd/6924eb_f8ac3f12dab9410c88d69e19778d9822.pdf
    • https://static.usrfiles.com/ugd/0c41e7_11dad7fdadcd43d8ae80facdf374b094.pdf
    • https://static.usrfiles.com/ugd/a4e402_52866d51bc944e439c762a073321b854.pdf
    • https://static.usrfiles.com/ugd/73f3b0_5dd7e7ed9689498e8c1ae3e15e1718a2.pdf
    • https://static.usrfiles.com/ugd/b8c837_04709d29d7f440bb9faddb0415b5f13f.pdf
    • https://static.usrfiles.com/ugd/b8c837_22369135569249eba7d94d423d4ad4c9.pdf
    • https://static.usrfiles.com/ugd/accd1f_1be772c63acc4b7b9817b0c510e08e67.pdf
    • https://static.usrfiles.com/ugd/913720_9a9e665f7c234c5191048790d1ddc999.pdf
    • https://static.usrfiles.com/ugd/a4d998_f9f05a5e484b4a6fa4585308d8292280.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_off00006242.bin
10d5d4b0f764850617e519286d9d86f7e42a05529e82f8b22b1fe7c405f28b1e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6242 5432 bytes
font_01_sfnt_off000074aa.bin
9c91b851fc0c65084c513bd60dc22a1906901abc8506a68c9beef41b594d9ec0
pdf-font-stream PDF embedded font (sfnt) at offset 0x74AA 10720 bytes