Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fb00fed22e5b677…

MALICIOUS

PDF

43.7 KB Created: 2020-08-31 02:47:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f9cd19c489bfad121ffe766ec7cc99b SHA-1: b660290b89f58a86fcec87d5c1f6a31868c3a04d SHA-256: 8fb00fed22e5b677cd59d7cf3efc2f12920c1b0d614309d5e4be6c3d4a82fa36
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a malicious redirector link. The primary link, https://ttraff.cc/wix?keyword=7+herramientas+estadisticas+de+la+calidad+pdf, is likely used to direct users to malicious content or phishing sites. The presence of numerous other links, predominantly hosted on cdn.shopify.com, suggests a link farm or SEO poisoning tactic to drive traffic to the malicious redirector.

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.cc/wix?keyword=7+herramientas+estadisticas+de+la+calidad+pdf
    • https://cdn.shopify.com/s/files/1/0429/0949/9558/files/67786449485.pdf
    • https://cdn.shopify.com/s/files/1/0437/0386/1416/files/2006_bmw_325i_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/3421/2509/files/nigexokabozuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/6513/0658/files/fedebazikefudepu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1588/9305/files/jirabojexugaseloxolajalog.pdf
    • https://cdn.shopify.com/s/files/1/0434/4263/4917/files/ragegimomigowuloxegugonum.pdf
    • https://cdn.shopify.com/s/files/1/0433/1870/6341/files/8416786105.pdf
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/codewords_78_quiz_answers.pdf
    • https://cdn.shopify.com/s/files/1/0438/2959/2214/files/72519355550.pdf
    • https://cdn.shopify.com/s/files/1/0431/0948/2658/files/durovi.pdf
    • https://cdn.shopify.com/s/files/1/0439/1269/1867/files/mesewosufifefonud.pdf
    • https://static.usrfiles.com/ugd/5ed537_be83951b917f476587ca9156e7b61346.pdf
    • https://static.usrfiles.com/ugd/804ff6_d58f5015ce304a1b80a4f0082f1e40e1.pdf
    • https://static.usrfiles.com/ugd/6908d7_46d8574e5afa4b588f551348b2a0e000.pdf
    • https://static.usrfiles.com/ugd/4b68be_c7fa4641964545e59488c44a64589b01.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_off0000692a.bin
a9fce7a2c9a6c6c970d29ec3d0abe753c325b15f9d0d34ec9e670620c73b297c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x692A 5380 bytes
font_01_sfnt_off00007b4a.bin
6d13bff9fe93d6a6f5d6004b204bb464772201e8cd59f79e97df12c6a4143d2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4A 11692 bytes

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