Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbcf6121b2316e9b…

MALICIOUS

PDF

50.1 KB Created: 2020-08-22 23:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d11a26c5c348c92efbbeeeb4a484b5d SHA-1: 02462438d8c9ad32c2d8fb096b115737957ccd5a SHA-256: cbcf6121b2316e9bbde9de822253da1889e0572cb34090ca14eb7fc84afadaa8
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL is https://ttraff.ru/pify?keyword=coesia+spa+annual+report, which likely serves as a gateway to further malicious content or phishing pages. The document body, though heavily obfuscated, contains references to the report title and the malicious URL, reinforcing the 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.ru/pify?keyword=coesia+spa+annual+report
    • http://files.cathermanslandscaping.com/uploads/1/3/2/7/132740533/xofedozapezinusimu.pdf
    • http://files.samsaraholidayhouse.com/uploads/1/3/0/8/130874360/d55b34abd.pdf
    • http://fojidiv.baketoplay.com/uploads/1/3/2/7/132740930/kexebipij.pdf
    • https://cdn.shopify.com/s/files/1/0430/5377/7045/files/karufaxamawema.pdf
    • https://cdn.shopify.com/s/files/1/0431/9500/7137/files/fosigebotowokelame.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/23059295447.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/93342443929.pdf
    • https://cdn.shopify.com/s/files/1/0434/8418/4728/files/ignou_date_sheet_for_dec_2019_exam.pdf
    • https://cdn.shopify.com/s/files/1/0427/9861/2636/files/wolumomimatejogo.pdf
    • https://cdn.shopify.com/s/files/1/0436/0654/0445/files/new_pan_application_form_file.pdf
    • https://cdn.shopify.com/s/files/1/0432/0028/2785/files/google_wifi_centurylink.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fofigez.pdf
    • https://cdn.shopify.com/s/files/1/0433/0265/0014/files/libro_cincuenta_sombras_mas_oscuras.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1935/files/kuzajuvexu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9440/0414/files/water_resources_engineering_mays.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/hemostasis_mechanism.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_off00007a2c.bin
56bdbda3619d46c96075ad4c8d2dffc6a6324e2e34d880833f9eeb93300342f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2C 4720 bytes
font_01_sfnt_off00008a38.bin
b764e737657af8b0bd8f6ea74dda40f7a50305e3fde85319f57ee0d928333c2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A38 16132 bytes

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