Malicious PDF — malware analysis report

Static analysis result for SHA-256 53096f9c24f766f1…

MALICIOUS

PDF

44.6 KB Created: 2020-08-20 06:43:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b0c1409d77f9dad2cbc5a55adf280c2 SHA-1: c90bcb61886881cb1e521ce04664dee8f707b9d7 SHA-256: 53096f9c24f766f1027c14b0d84b6eac3240c078bbf84f27951424de3dee0796
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 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links hosted on Shopify domains, likely intended to obscure the malicious destination. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. No scripts were extracted from this sample.

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=diagram+of+the+lungs+worksheet
    • http://kugivivog.ritecookware.com/uploads/1/3/1/4/131453960/f43badd.pdf
    • http://files.pennybrittenphotography.com/uploads/1/3/2/6/132682913/doleripifeza-fobuxawasamuxil-bufipate-vorawu.pdf
    • http://kavup.specialhandsgroup.com/uploads/1/3/1/4/131453134/8f2216e084c.pdf
    • http://files.joyneruphorsemanship.com/uploads/1/3/2/7/132740296/jezutunojepor.pdf
    • http://files.brainerdbataan.com/uploads/1/3/0/8/130814531/222988fe5bbcd.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/56725508977.pdf
    • https://cdn.shopify.com/s/files/1/0436/6244/2646/files/8207412043.pdf
    • https://cdn.shopify.com/s/files/1/0433/9764/4444/files/refasokesede.pdf
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/brothers_images_hd.pdf
    • https://cdn.shopify.com/s/files/1/0429/3256/8220/files/acids_and_bases_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tufajotojitumawudawemir.pdf
    • https://cdn.shopify.com/s/files/1/0434/2949/4940/files/bigefofababijo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/decode_base64_to_python.pdf
    • https://cdn.shopify.com/s/files/1/0437/6051/7271/files/bmw_z3_electrical_troubleshooting_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/7862/2111/files/bahishti_zewar_book_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/49613453600.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_off000070b2.bin
c47427804b95554e6256ec3e9a0a43307ddb5643da8056d9dc59e79b261bd96f
pdf-font-stream PDF embedded font (sfnt) at offset 0x70B2 5336 bytes
font_01_sfnt_off000082ca.bin
38c2db513ec3494326442606f9586a1fdd54fafbf81a01b0cc7b0febba94a122
pdf-font-stream PDF embedded font (sfnt) at offset 0x82CA 10204 bytes