Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6948233254f464b…

MALICIOUS

PDF

48.6 KB Created: 2020-08-02 09:57:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45b2ca67b8e6d484a1883eaa780c68ea SHA-1: 6d6284989296ec7108205a85c13f10a4ff910a6c SHA-256: a6948233254f464ba7b19f6ce6af595b2ca21fcc2b75847f00b3c6de134a28bf
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=discord+syntax+highlighting+languages'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with 'https://cdn.shopify.com/s/files/1/0428/5412/1635/files/relikewagifawij.pdf' being the first identified. The document body, though heavily obfuscated, contains references to these URLs, suggesting an attempt to drive traffic to malicious infrastructure.

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/pify?keyword=discord+syntax+highlighting+languages
    • http://files.yogamybedandme.com/uploads/1/3/0/8/130874077/fipigaruvojevejema.pdf
    • http://files.isoandbusinessexpert.com/uploads/1/3/0/8/130813797/noxodak.pdf
    • http://files.ashleybarrington.com/uploads/1/3/1/3/131380440/vosojunodomaluk.pdf
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/relikewagifawij.pdf
    • https://cdn.shopify.com/s/files/1/0429/2801/3475/files/lititepunowazuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/8629/9815/files/15474677241.pdf
    • https://cdn.shopify.com/s/files/1/0431/2429/3796/files/45343527675.pdf
    • https://cdn.shopify.com/s/files/1/0429/8289/9871/files/daduduxududiworofibu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8806/0321/files/scipy_curve_fit.pdf
    • https://cdn.shopify.com/s/files/1/0434/3323/0488/files/pobugekakapatamep.pdf
    • https://cdn.shopify.com/s/files/1/0433/8201/4108/files/sesukipod.pdf
    • https://cdn.shopify.com/s/files/1/0430/2451/5235/files/tibisefumidopokanebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6636/files/7903888008.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/68178374321.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1715/files/jodasijuwizowepodeso.pdf
    • https://cdn.shopify.com/s/files/1/0434/0757/3157/files/puxonet.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_off00006478.bin
b900d70c6ed305756f45f8ccd44fb93f4d36681adc5480a45d215d941e2de87f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6478 5372 bytes
font_01_sfnt_off000076c8.bin
7aa5381b33a1286b50135d44e9a42bb1328dda34ed97c12b663f7cf35448c59d
pdf-font-stream PDF embedded font (sfnt) at offset 0x76C8 12756 bytes
font_02_sfnt_off00009fb7.bin
fc40bf1d790567fd59e77b218ddcabc3e7186296079e557e73df8fe64be73277
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB7 16092 bytes