Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cb90155a6d2e804…

MALICIOUS

PDF

59.5 KB Created: 2020-08-14 14:32:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5457b21801234f0afad99b349b9164de SHA-1: 1f903edac301b2c113f4f289bf9cb3c1d2169d58 SHA-256: 1cb90155a6d2e8046b3778f7e53db7cf919a52ea85b827cf7e7ef048d2da8da0
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains, and one critical link to a known malicious redirector at 'ttraff.cc'. The document body contains a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The primary intent appears to be redirecting users to malicious infrastructure.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=admob+native+ads+recyclerview+android
    • http://files.mickeydloughy.com/uploads/1/3/1/0/131070581/468d1dd5c.pdf
    • http://files.awakenteenleadership.net/uploads/1/3/2/7/132712006/833b28f6861.pdf
    • http://files.stuartmcdonaldmp.co.uk/uploads/1/3/0/7/130775245/davedoxomex-lomitiwuledubu-gesufexivejax.pdf
    • http://files.cordescottage.com/uploads/1/3/0/7/130739631/dac46e390b5.pdf
    • https://cdn.shopify.com/s/files/1/0428/7424/1187/files/penubidajixamikizepufan.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/kundalini_yoga_in_malayalam.pdf
    • https://cdn.shopify.com/s/files/1/0431/1898/5370/files/nurugijubejale.pdf
    • https://cdn.shopify.com/s/files/1/0432/0113/4747/files/66570609127.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6605/files/kivulaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/jepapuzovikinegam.pdf
    • https://cdn.shopify.com/s/files/1/0435/3998/8648/files/los_dioses_en_los_cdices_mexicanos_del_grupo_borgia.pdf
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/badijeta.pdf
    • https://cdn.shopify.com/s/files/1/0437/5802/6904/files/compelling_wealth_management_conversations.pdf
    • https://cdn.shopify.com/s/files/1/0435/0902/2886/files/kufad.pdf
    • https://cdn.shopify.com/s/files/1/0438/0455/7469/files/admin_roles_and_responsibilities.pdf
    • https://cdn.shopify.com/s/files/1/0433/8148/9829/files/home_automation_using_arduino_and_bluetooth_code.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/
    • https://cdn.shopify.com/s/files/1/0430/7173/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a1a8.bin
1cbe750960e82cdadac6476f19e6fb4c9b7715431ce6bbc5ef8e8234765c48a3
pdf-font-stream PDF embedded font (sfnt) at offset 0xA1A8 5468 bytes
font_01_sfnt_off0000b43d.bin
9e0a47fb5cc09b39c29fd184bc49fab747abbb8fbc6b26dd1de9260923270ce2
pdf-font-stream PDF embedded font (sfnt) at offset 0xB43D 13912 bytes