Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc68766ede12eda9…

MALICIOUS

PDF

38.8 KB Created: 2020-08-15 21:57:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4689841b52ebbc4ad28f391fc77225ca SHA-1: cea676a2a49d22f9fd327188383c11ec352f38f2 SHA-256: cc68766ede12eda92f4911b681f0fd81ab88337e9e88138589bc20a527452c4c
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with SEO link farms. The primary malicious link redirects to 'ttraff.com', which is flagged as a malicious redirector. The document body, though malformed, contains text related to 'demand and supply questions and answers pdf', suggesting a lure to attract users searching for such information. The presence of numerous Shopify-hosted PDF links, while some are benign, contributes to the overall SEO spamming tactic.

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/wb?keyword=demand%20and%20supply%20questions%20and%20answers%20pdf
    • http://files.ocassionalroadtripper.com/uploads/1/3/1/4/131453645/zilewobulipiwel_fozegoduvawat.pdf
    • http://varixexu.hankkellyartists.com/uploads/1/3/1/3/131383544/4cb9b0a4f7b.pdf
    • http://files.deustone.com/uploads/1/3/2/6/132680860/sebijomaxizixabeni.pdf
    • http://wasoko.paintings4areason.com/uploads/1/3/0/8/130874197/9498758.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4889/files/witezanovedodililifovexij.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3277/files/bodas_de_sangre_simbolos.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/jekimebi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3464/8474/files/20258932989.pdf
    • https://cdn.shopify.com/s/files/1/0437/6661/2119/files/english_suffixes_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/zogigajuvolir.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/adda247_puzzle_and_seating_arrangement_book.pdf
    • https://cdn.shopify.com/s/files/1/0439/7318/1598/files/xixikixegepaxe.pdf
    • https://cdn.shopify.com/s/files/1/0435/8383/2227/files/44175437711.pdf
    • https://cdn.shopify.com/s/files/1/0435/1941/0335/files/77607899282.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_off00005a71.bin
cfb2ed75eb5c8ce15b3d40e975be6f49666eddc11d6af24c8e4b9fccfea928eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A71 5504 bytes
font_01_sfnt_off00006d2c.bin
b004f5d3268e55a45210edf3f8e43589ec85fd659ac521784a443c3db965c316		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2C 9752 bytes

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