Malicious PDF — malware analysis report

Static analysis result for SHA-256 c99066bbb2d8a5a0…

MALICIOUS

PDF

64.8 KB Created: 2020-08-06 16:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 413a9c555b815c3e2eb6f1dec3c52146 SHA-1: 2c9715a11a6a56ae9f72cdeff91df378690a5ce5 SHA-256: c99066bbb2d8a5a066c750edb2e3142096db2c67950cb940f1e3d17238cdb9c0
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 a link farm hosted on Shopify. One critical heuristic firing indicates a link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=aparato+digestivo+de+las+aves+y+sus+funciones+pdf', suggesting the primary intent is to redirect users to malicious infrastructure. 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.ru/pify?keyword=aparato+digestivo+de+las+aves+y+sus+funciones+pdf
    • http://files.paloaltoglass.com/uploads/1/3/0/7/130776054/puwawew-xijiluwovazew-vusabufubuzisu.pdf
    • http://files.laniereducationfoundation.org/uploads/1/3/0/8/130813420/tededotezaluvometo.pdf
    • http://files.dglivestock.com/uploads/1/3/1/6/131606859/rodogulafumulenupaxu.pdf
    • http://pokol.yogibjewelry.com/uploads/1/3/1/4/131409090/216ab92b.pdf
    • https://cdn.shopify.com/s/files/1/0434/0455/8488/files/visual_studio_2017_product_key.pdf
    • https://cdn.shopify.com/s/files/1/0435/1148/0472/files/31683429530.pdf
    • https://cdn.shopify.com/s/files/1/0430/3332/9815/files/nexevonotikurafanu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7795/8822/files/nufogarewofupit.pdf
    • https://cdn.shopify.com/s/files/1/0431/0709/0589/files/32178633035.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9020/files/tefesa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/monaregunaxipopivalurebin.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0876/files/best_zelda_songs.pdf
    • https://cdn.shopify.com/s/files/1/0433/4243/0362/files/kaxiwulogoxepegi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3405/7621/files/why_are_you_interested_in_programming.pdf
    • https://cdn.shopify.com/s/files/1/0438/5298/8566/files/vodokovobidovavik.pdf
    • https://cdn.shopify.com/s/files/1/0434/9024/6822/files/races_dnd_5e.pdf
    • https://cdn.shopify.com/s/files/1/0428/9773/5843/files/56220972406.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofusibosaduxigagixuvoma.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_off0000bbce.bin
5fd6cb12c78dfaf7f19e003b7c8f4840467653348290ec2ea358a73af128bec6
pdf-font-stream PDF embedded font (sfnt) at offset 0xBBCE 5472 bytes
font_01_sfnt_off0000ce8e.bin
a69a36c876d3ab05bc59e4199b4ae1a09cc34cdc0e9185d732d9db3a1d3e2496
pdf-font-stream PDF embedded font (sfnt) at offset 0xCE8E 11520 bytes