Malicious PDF — malware analysis report

Static analysis result for SHA-256 25f619366124d44f…

MALICIOUS

PDF

51.8 KB Created: 2020-08-15 00:29:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 470e7fe6e4cd62b95638bf6b5521b2aa SHA-1: 6647e82884e803e50bb03266976b938e1135d4f7 SHA-256: 25f619366124d44f47f6d11fd47453ab8bd5c8739184cd0bbb06a07e64321371
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK pointing to ttraff.com. This indicates the document is designed to lure users to malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further supports this, showing a large number of external links, many hosted on Shopify, likely to obscure the malicious redirector. The presence of a 'Download Button' heuristic suggests a social engineering tactic to encourage clicks.

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=django+template+tag+if+equal
    • http://files.mrbroviak.com/uploads/1/3/2/7/132740234/a380c20f3.pdf
    • http://files.secretbutterflyboutique.com/uploads/1/3/0/7/130776828/tuzumoduponi.pdf
    • http://files.deafwomenofcolor.org/uploads/1/3/1/0/131070674/tenovas_bisufuwa_xosominideligob_girigeja.pdf
    • https://cdn.shopify.com/s/files/1/0428/6621/3031/files/31936237206.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64630415929.pdf
    • https://cdn.shopify.com/s/files/1/0439/2386/5768/files/sapavututidepi.pdf
    • https://cdn.shopify.com/s/files/1/0448/1577/7954/files/biophilic_design_research_paper.pdf
    • https://cdn.shopify.com/s/files/1/0449/6100/5736/files/complete_ukulele_chord_chart.pdf
    • https://cdn.shopify.com/s/files/1/0429/7218/4732/files/vedixolawuwizolovamitulin.pdf
    • https://cdn.shopify.com/s/files/1/0454/5187/0358/files/campbell_biology_second_canadian_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vejut.pdf
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/73214118964.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_off00006e06.bin
c46f89abe3f4c8f342feb4f7dbc7f5d9d839a88459cc0ca82f5ba2fc506e4d92
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E06 5148 bytes
font_01_sfnt_off00007f8d.bin
d4c92a121582bd325ce7b15c8fe6a54bbf41d7334eb7685d8fb30f5cd99500ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8D 13508 bytes
font_02_sfnt_off0000ab73.bin
975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15
pdf-font-stream PDF embedded font (sfnt) at offset 0xAB73 16312 bytes