Malicious PDF — malware analysis report

Static analysis result for SHA-256 75aea4aa893258e4…

MALICIOUS

PDF

41.9 KB Created: 2020-08-14 00:17:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a58c5e4b8c2df357f8a44cc993a77ad SHA-1: 872d7effe2b7a8445ef4ba2c375f173335f30604 SHA-256: 75aea4aa893258e4064d2a15b5bf46d90d1b680f49c9a3f971ea02f575e0c4bb
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, masquerading as a 'Paint color selection guide'. One of these links, https://ttraff.ru/pify?keyword=paint+color+selection+guide, is flagged as a malicious redirector. The document's primary purpose appears to be to drive traffic to malicious or potentially unwanted websites through this link farm. No scripts were extracted from this sample.

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=paint+color+selection+guide
    • http://files.bfpartyrentals.com/uploads/1/3/1/1/131164250/2570890.pdf
    • http://files.instantresultswithkate.com/uploads/1/3/1/4/131438538/lotexidesodupul-bawiluzov-samugurali.pdf
    • http://files.026futbolclub.com/uploads/1/3/1/3/131398452/vijukixomoti_pelajizemosoda_webof.pdf
    • https://cdn.shopify.com/s/files/1/0434/6318/0454/files/jemusunebizib.pdf
    • https://cdn.shopify.com/s/files/1/0434/5859/2921/files/emulator_ps2_android_apk_bios.pdf
    • https://cdn.shopify.com/s/files/1/0431/0263/4148/files/skyrim_se_dark_face_fix.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1735/files/vajedosadirerazodode.pdf
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/91965358773.pdf
    • https://cdn.shopify.com/s/files/1/0440/4278/0837/files/28016143505.pdf
    • https://cdn.shopify.com/s/files/1/0440/3675/1525/files/4446842517.pdf
    • https://cdn.shopify.com/s/files/1/0429/1778/9862/files/waxuwazotedowixamiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/7100/5082/files/mil_bosquejos_para_predicadores.pdf
    • https://cdn.shopify.com/s/files/1/0446/6409/4873/files/how_to_cartoon_a_picture_in_photoshop.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_off000066db.bin
9fb7e52291ba934ba614345d597f57736e09463641b639a3f95c2443f10a9595		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66DB 5108 bytes
font_01_sfnt_off00007835.bin
532efee8bd91c580667f3c27c2a8c992e769f2447c39eda2c92f89756ccbb666		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7835 10220 bytes

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