Malicious PDF — malware analysis report

Static analysis result for SHA-256 92cf8c4533eb61fb…

MALICIOUS

PDF

47.6 KB Created: 2020-08-15 03:14:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c4a7dfe956ba62e2fa2cf2adc6e8276 SHA-1: 98e0c43932eb420bdd3bf035f2476d12c8e79f61 SHA-256: 92cf8c4533eb61fbb734754f3642b581fab3e745fc4d899042ec41be838eb133
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, forming a link farm. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which is used to obscure the ultimate destination. The document body, though heavily obfuscated, contains the same song title and the malicious redirector URL, suggesting a lure to trick users into clicking the link. 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=bekhayali+mein+kabir+singh+song
    • http://dexozox.interfaithleaders.org/uploads/1/3/1/4/131453247/xigodi.pdf
    • http://files.syzygydanceproject.org/uploads/1/3/1/8/131856173/bd327f.pdf
    • http://files.fantasydraftkit.net/uploads/1/3/0/9/130969386/dekibukexedozu-sajajitovubuwe.pdf
    • http://files.centralmissouricarpenters.org/uploads/1/3/0/8/130874634/1bed01375962.pdf
    • http://rugegi.baskog.com/uploads/1/3/2/6/132682717/bavilewaka-towasij-lizugaze.pdf
    • https://cdn.shopify.com/s/files/1/0437/7663/9127/files/857188694.pdf
    • https://cdn.shopify.com/s/files/1/0435/5984/6051/files/nofegiva.pdf
    • https://cdn.shopify.com/s/files/1/0434/8579/0358/files/jojebigotedafarudij.pdf
    • https://cdn.shopify.com/s/files/1/0431/6751/4788/files/kegelepubavaronigebare.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/45759324131.pdf
    • https://cdn.shopify.com/s/files/1/0450/7539/8821/files/vivud.pdf
    • https://cdn.shopify.com/s/files/1/0430/8028/6372/files/98707125886.pdf
    • https://cdn.shopify.com/s/files/1/0431/2799/6565/files/automatize_tarefas_maantes_com_python_download_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/advanced_burn_life_support.pdf
    • https://cdn.shopify.com/s/files/1/0430/6354/1913/files/land_contract_agreement_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5578/files/89084718078.pdf
    • https://cdn.shopify.com/s/files/1/0432/4347/1003/files/55860963692.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_off0000645a.bin
4e9d235275c833e5152a56fbcee999bd5e39280c071b42efffe4296d20f2dfcd
pdf-font-stream PDF embedded font (sfnt) at offset 0x645A 5160 bytes
font_01_sfnt_off000075b1.bin
b44ca6fbe19ac61e99098bf151370494fb1d530f2da80d78d6a5632e2958628b
pdf-font-stream PDF embedded font (sfnt) at offset 0x75B1 14704 bytes
font_02_sfnt_off0000a3a1.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3A1 4324 bytes