Malicious PDF — malware analysis report

Static analysis result for SHA-256 f63847bf8adb5bb9…

MALICIOUS

PDF

46.1 KB Created: 2020-08-28 17:59:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bde824b04f72920166feae9c37cf13fb SHA-1: 332148fc7e42628d982ad5040bf306078ef837f0 SHA-256: f63847bf8adb5bb91c658c5bcf157de07ba52ad19df7591a5ea8b4b20af84aaa
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL 'https://ttraff.cc/pify?keyword=re%253A+maid+all+endings' is a known malicious redirector. The document body, though heavily obfuscated, contains references to this URL and numerous other PDF links, suggesting a coordinated effort to distribute malicious content. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/pify?keyword=re%253A+maid+all+endings
    • http://xuregogin.theatreodyssey.com/uploads/1/3/1/4/131452883/jevefemasabumuw-felubekon.pdf
    • http://files.spanishflamencodance.com/uploads/1/3/0/8/130873798/5a93b716ad761.pdf
    • http://files.ultimatefrisbeenow.com/uploads/1/3/1/4/131453397/puratibunovip.pdf
    • http://files.highvariancegames.com/uploads/1/3/1/1/131163832/df166afd159422.pdf
    • http://files.well-estar.com/uploads/1/3/1/6/131637034/91a0067.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/53113181566.pdf
    • https://cdn.shopify.com/s/files/1/0435/5466/8705/files/free_torch_browser_for_windows_xp.pdf
    • https://cdn.shopify.com/s/files/1/0435/3225/5392/files/fupafo.pdf
    • https://cdn.shopify.com/s/files/1/0439/8238/9406/files/63612916521.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdf
    • https://cdn.shopify.com/s/files/1/0428/7417/5644/files/44015015262.pdf
    • https://cdn.shopify.com/s/files/1/0457/6487/0300/files/canopus_software_free_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7670/files/gitasanefatejupubovunu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/sudazuwike.pdf
    • https://cdn.shopify.com/s/files/1/0432/3511/5176/files/tetovuxufupifogeja.pdf
    • https://cdn.shopify.com/s/files/1/0437/4380/5594/files/california_resale_certificate_form.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_off00006c03.bin
65c8eea35046a392d2e23ec2616d1e10c63af2112e948b0628794b65df8544b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C03 4704 bytes
font_01_sfnt_off00007bd3.bin
578ea37b912ea724e46ece40a903e0b99dcbccaf24581c06715131663610f4bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD3 9900 bytes
font_02_sfnt_off00009d8b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D8B 4324 bytes