Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dad65c4d7e18c7b…

MALICIOUS

PDF

43.7 KB Created: 2020-08-26 05:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c4d17f4f7ef181f3c9eafc8443baf3b SHA-1: fb8514001d02b54d923a13e8dc653fd9f8c6570e SHA-256: 1dad65c4d7e18c7b5c417486112a2484607b95f9bae6ffccce45b14a30c00714
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a malicious redirector. The primary malicious URL is https://ttraff.ru/pify?keyword=esl+adjectives+to+describe+personality+pdf, which is likely used to lure the user to a malicious site. The document body, though heavily obfuscated, also contains this URL, reinforcing the redirection attempt. The presence of numerous links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious payload.

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=esl+adjectives+to+describe+personality+pdf
    • http://files.cincigreyhounds.org/uploads/1/3/0/7/130739615/jafajelu.pdf
    • http://files.scchea.com/uploads/1/3/2/6/132696104/6517520.pdf
    • https://cdn.shopify.com/s/files/1/0428/5821/7631/files/vogekebovanurosororuz.pdf
    • https://cdn.shopify.com/s/files/1/0448/0958/4802/files/template_iraq_civil_war_map.pdf
    • https://cdn.shopify.com/s/files/1/0432/6631/0299/files/52219535038.pdf
    • https://cdn.shopify.com/s/files/1/0434/2045/0972/files/30346499665.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/sudo_apt-_get_install_git.pdf
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/god_of_war_3_hidden_trophy_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2584/1819/files/xodirorabijidusap.pdf
    • https://cdn.shopify.com/s/files/1/0437/6684/1505/files/bal_brahmachari_video_songs.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fodafozisejuleluz.pdf
    • https://cdn.shopify.com/s/files/1/0429/1795/3702/files/zeleniluzizenefuripogi.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_off00006c80.bin
b999e9875c10db189401d4139fc2ab639d1fffcaca82735c382ad3153855d86c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C80 5484 bytes
font_01_sfnt_off00007f40.bin
5f569426ad29e80bbb10f32a44aef68f13ae093488cc6c62f52bee025ec6a4f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F40 10060 bytes

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