Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c0ee3b6e16e5dcf…

MALICIOUS

PDF

53.7 KB Created: 2020-08-18 17:26:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0307d6806cad0d139c96565d63cd00e2 SHA-1: 231e981408cf41acdfc3740944c4b03ff8c1b14c SHA-256: 8c0ee3b6e16e5dcfa4673c35ed993a434719faed6c97f82e93a03312270bf68b
150 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, specifically pointing to 'https://ttraff.cc/pify?keyword=life+rpg+app+guide'. This URL is embedded within the document body, suggesting an attempt to trick the user into visiting a malicious site. The presence of a PDF link farm heuristic further supports the malicious intent of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=life+rpg+app+guide
    • http://files.corbyharrislab.com/uploads/1/3/1/4/131406258/988503.pdf
    • http://worar.highhillproductions.com/uploads/1/3/1/4/131408024/wekeleviwe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6565/4939/files/managerial_accounting_tools_for_business_decision_making_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/foregawu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6370/4729/files/wefel.pdf
    • https://cdn.shopify.com/s/files/1/0437/7578/7169/files/kei_armoured_cable_price_list_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/1668/1629/files/ayyappa_swamy_bajana_songs_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0440/7705/6165/files/tapinifunodabeli.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/bending_moment_theory.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/tefinazu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7119/2732/files/edit_for_free_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0445/8446/8644/files/employee_absenteeism_in_brazil.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_off000088c0.bin
053d8d276a9738de61232866c96847523d8f55c1b156947e12e482965e486b6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88C0 4528 bytes
font_01_sfnt_off0000982f.bin
7bd6d303683561b0b86148755843db108f0be4e17408f897e06f3cb52aca666c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x982F 10420 bytes
font_02_sfnt_off0000bbda.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBBDA 4324 bytes

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