Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdc7c787f54865bb…

MALICIOUS

PDF

47.9 KB Created: 2020-08-09 08:17:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84bd4a6c39a9af69c1f60961114eed77 SHA-1: 93b0b3ef0212f3b86e6a7984123926edd57f0628 SHA-256: cdc7c787f54865bb52d7fcb5eed9c45c2e6090305ed7dc6c35c6ae167c2e60dc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=cancer+pathology+report+pdf', is designed to redirect users to malicious content. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDFs, suggesting an attempt to manipulate search engine results or distribute further malicious content. The document body, though partially corrupted, contains the malicious URL and keywords related to a pathology report, indicating a social engineering lure.

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=cancer+pathology+report+pdf
    • http://files.dreamweaverimaging.com/uploads/1/3/2/6/132695491/gaditajili_gadix_wuxax_fodipa.pdf
    • http://mixitu.neflopioidepidemic.com/uploads/1/3/1/4/131407535/nididagezolozajun.pdf
    • http://files.realviewelectronics.com/uploads/1/3/0/7/130740053/1543863.pdf
    • http://files.katharinemorgandesign.com/uploads/1/3/1/4/131452949/vodusurefo_mamiwoguvo_kojoxawerovemin.pdf
    • http://files.amaranthusestate.com/uploads/1/3/0/7/130740190/638ad91dc29.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9488/files/fijofefabo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/23734200684.pdf
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/30427846996.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/luvibuxunefipefijuli.pdf
    • https://cdn.shopify.com/s/files/1/0440/3917/6342/files/current_temperature_ann_arbor.pdf
    • https://cdn.shopify.com/s/files/1/0432/0467/3699/files/37573910057.pdf
    • https://cdn.shopify.com/s/files/1/0439/3231/9912/files/ladowuwunon.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/14159166874.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9128/files/3817640738.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/mixaforegilowore.pdf
    • https://cdn.shopify.com/s/files/1/0432/4353/6541/files/39675203881.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/19779019882.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90841244024.pdf
    • https://cdn.shopify.com/s/files/1/0446/3493/1363/files/wijititaviza.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_off00007e0d.bin
ec0ab1ca9ef685cb969df05597e405cafa120114e0bd13c38ce139d820baf67c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E0D 5244 bytes
font_01_sfnt_off00008fe3.bin
122baad08411a9629a38cf26231576e14ca2dafbfb7caff7e757516ab918ccd1
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FE3 10040 bytes