Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c40898307d93cc4…

MALICIOUS

PDF

44.1 KB Created: 2020-09-06 10:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7432be69d684728f748da67dab729405 SHA-1: feaac4d4d9b316466e93ae363ce7e7ce831fe267 SHA-256: 4c40898307d93cc4de821c68be10c768af9522487bf2fdb4e47919de05809835
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.club, which is likely used to host further malicious content or phishing pages. The document body and metadata suggest a lure related to 'pdf.js in angularjs', aiming to trick users into clicking the malicious link. The presence of a link farm further supports the malicious intent of redirecting users to potentially harmful sites.

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.club/pify?keyword=pdf.+js+in+angularjs
    • https://cdn.shopify.com/s/files/1/0432/4016/1435/files/30348248823.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977390730.pdf
    • https://cdn.shopify.com/s/files/1/0460/3379/7279/files/bowujemolones.pdf
    • https://cdn.shopify.com/s/files/1/0462/3466/5114/files/73350674134.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/buwuwivatokidu.pdf
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/varexek.pdf
    • https://cdn.shopify.com/s/files/1/0431/9870/9917/files/foot_locker_franchise_information.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/2015_bmw_x3_xdrive28i_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/redes_alimentarias_alternativas.pdf
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/finemajodibawepifanaxu.pdf
    • https://static.usrfiles.com/ugd/71fd01_da01a93b1b764415872ee054c7ac3360.pdf
    • https://static.usrfiles.com/ugd/b8c837_d8991a978f024afbb5ba4dd873c02fef.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_off0000648b.bin
f4e7a972df8106811a35ed023af6873927f3364c864929b60505d70c33eb22f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x648B 5184 bytes
font_01_sfnt_off0000764b.bin
0648e946265f5645c32c96e3d2e6ad77134fbcaff73e714841e26511b0bba9af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x764B 13752 bytes

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