Malicious PDF — malware analysis report

Static analysis result for SHA-256 3325c2af980c351b…

MALICIOUS

PDF

38.4 KB Created: 2020-08-16 14:47:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 452dda994a6f6ab1945bf82591633cd5 SHA-1: 776c0059cc9ca6a7b428deda350e958f3147f27a SHA-256: 3325c2af980c351b6ccaec4f14e40cc835a9a0cdc2e1ebc785d92fa3dd9e1f99
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.cc/pify?keyword=chhota+bheem+aur+krishna+images`. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many of which are hosted on `cdn.shopify.com`. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary intent is to redirect the user to malicious content, likely for phishing or malware delivery.

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/pify?keyword=chhota+bheem+aur+krishna+images
    • http://files.nrcdubai.com/uploads/1/3/0/7/130776483/8609783.pdf
    • http://files.flowengagement.com/uploads/1/3/1/6/131636807/bb1954dd91cda.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kupenase.pdf
    • https://cdn.shopify.com/s/files/1/0431/8691/3439/files/54780639352.pdf
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/80259321101.pdf
    • https://cdn.shopify.com/s/files/1/0428/2331/9715/files/33771649107.pdf
    • https://cdn.shopify.com/s/files/1/0445/5625/5396/files/unix_cheat_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3571/files/tuvunopenowimiduloda.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/millionaire_next_door.pdf
    • https://cdn.shopify.com/s/files/1/0431/6063/3504/files/jeminogesomudifus.pdf
    • https://cdn.shopify.com/s/files/1/0436/2852/7776/files/77931152143.pdf
    • https://cdn.shopify.com/s/files/1/0434/0314/9462/files/tixopikoropitot.pdf
    • https://cdn.shopify.com/s/files/1/0433/9056/6556/files/cards_against_disney.pdf
    • https://cdn.shopify.com/s/files/1/0432/6519/6197/files/21635904030.pdf
    • https://cdn.shopify.com/s/files/1/0430/9480/2589/files/wibitimamu.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_off0000570f.bin
64cde3b2f4697e7c42520eda5fe9e856743af0d7794c5df99f3bb05b96334885		 pdf-font-stream PDF embedded font (sfnt) at offset 0x570F 5176 bytes
font_01_sfnt_off00006887.bin
7a0c10807d2c990f7c1d82ff2117502fa9ab009cff0f145dae260b225fe642a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6887 10988 bytes

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