Malicious PDF — malware analysis report

Static analysis result for SHA-256 b707a7f577ac1fc9…

MALICIOUS

PDF

41.8 KB Created: 2020-08-15 01:38:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6389e7647b3f6a94661a825235bee9ad SHA-1: 1aa81f90bcd4d331b680334e6904590246e2a69d SHA-256: b707a7f577ac1fc9cb90731a27e839ddf1ae8f8d84a317138198fa3eeaa2b00e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination. The document body, though heavily obfuscated, contains text related to 'Azure information protection' and the PDF creation tool, suggesting a social engineering lure. The presence of numerous links, including those to benign Shopify domains and potentially malicious custom domains, indicates a link farm strategy to distribute malicious content.

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=azure+information+protection
    • http://giwenob.delindro.com/uploads/1/3/0/8/130814328/xipobalal-bimafazikuru.pdf
    • http://gexabinov.pre-protein.com/uploads/1/3/0/9/130969761/120f35.pdf
    • http://judat.artedelquarzo.com/uploads/1/3/0/7/130775189/1638242.pdf
    • http://files.thebathbombshop.co.uk/uploads/1/3/1/1/131163879/435df5bb1724.pdf
    • https://cdn.shopify.com/s/files/1/0431/6158/3776/files/best_freeware_reader_for_windows.pdf
    • https://cdn.shopify.com/s/files/1/0438/1143/8752/files/muzirim.pdf
    • https://cdn.shopify.com/s/files/1/0430/7917/2257/files/45974621381.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3475/files/download_able2extract_converter_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/2150/8509/files/25481349127.pdf
    • https://cdn.shopify.com/s/files/1/0435/8999/2605/files/repinijefudozo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/vexukizarugerusak.pdf
    • https://cdn.shopify.com/s/files/1/0435/6128/7839/files/jarisexodenakevexa.pdf
    • https://cdn.shopify.com/s/files/1/0440/6509/5845/files/jutejev.pdf
    • https://cdn.shopify.com/s/files/1/0434/2058/2050/files/31944602830.pdf
    • https://cdn.shopify.com/s/files/1/0454/5445/9030/files/mubaxoxiwobovo.pdf
    • https://cdn.shopify.com/s/files/1/0430/7936/8858/files/atualizao_android_xiaomi.pdf
    • https://cdn.shopify.com/s/files/1/0429/4000/6559/files/33176022725.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_off00006780.bin
6af16f2c60abc05cbc18de1b6f6ea5f3283bae9c664e8c3878b2808f8015b52a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6780 4988 bytes
font_01_sfnt_off00007865.bin
cdf82d2f3d7ebb2cf1e71ce41fee186553f1fa2e7eb9374dca239215c944ecc8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7865 9936 bytes