Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab8986c194b1b9cf…

MALICIOUS

PDF

45.9 KB Created: 2020-07-28 21:31:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f631a7d8708c39aedc269164f4d93f3 SHA-1: 6f1e3d469d49eb44e3dd90171f60e006142e1c56 SHA-256: ab8986c194b1b9cfe4d10a896a1335274063cbea527603175ee2ae1ef74f951e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This URL is part of a link farm designed to host a large number of PDFs, as indicated by another critical heuristic. The document body, though heavily obfuscated, contains text related to 'Chilasow movie free', suggesting a lure for users to click the malicious link.

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.com/pify?keyword=chilasow+movie++free
    • http://files.howardclubsouthwestflorida.org/uploads/1/3/1/4/131452811/6f656b4.pdf
    • http://files.natalieasport.com/uploads/1/3/2/8/132814505/dulufele_danotizipa_xabulonomo.pdf
    • http://files.hamtaladesigns.com/uploads/1/3/0/7/130775071/rufovudopura-sulivudotori-zajiregupitoda.pdf
    • http://files.miltonfame.org/uploads/1/3/1/3/131379591/9625305.pdf
    • http://files.ryanleekk.com/uploads/1/3/1/1/131164372/dawabafivipizu_nasofuxid_gozem.pdf
    • http://files.ryanleekk.com/uploads/1/3/1/1/131164372/dawabafiv
    • https://cdn.shopify.com/s/files/1/0427/6987/5111/files/nufewiwuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/41078692832.pdf
    • https://cdn.shopify.com/s/files/1/0433/8365/2506/files/pusaziwinu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7763/1126/files/64332142505.pdf
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/28803761283.pdf
    • https://cdn.shopify.com/s/files/1/0438/1566/5826/files/bujemuvagalepise.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/bodixomoxelotarujugej.pdf
    • https://cdn.shopify.com/s/files/1/0434/8326/7236/files/95977668344.pdf
    • https://cdn.shopify.com/s/files/1/0438/6576/8096/files/fefovetu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6734/1974/files/95104909152.pdf
    • https://cdn.shopify.com/s/files/1/0437/1103/7589/files/76729621681.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_off000077c8.bin
1447466903abf1c60a5c77b40e17e53d7d4a9b92d63cfd7a3ea0c5693f18b659		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77C8 4784 bytes
font_01_sfnt_off00008817.bin
330c8734ed605028aa168bd6e440b8b62514d26d2f6694abbaa896c639f9037e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8817 10044 bytes

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