Malicious PDF — malware analysis report

Static analysis result for SHA-256 46fa5f8282bfb0a7…

MALICIOUS

PDF

42.3 KB Created: 2020-08-24 19:48:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 951bb16b50e097655877bc49babaf98f SHA-1: 65648cedc9e941e3fb5888a375b9492f751810d4 SHA-256: 46fa5f8282bfb0a7653b57ef10bd46e7e555adce9ee8a5afae1bcbe55303382e
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, identified as a link farm, with the primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the initial lure text 'Nova frost chewing gum remover data sheet' and the malicious URL. This suggests the document is designed to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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=nova+frost+chewing+gum+remover+data+sheet
    • http://files.chloeadlerteaching.com/uploads/1/3/1/4/131453177/nerivufi.pdf
    • http://files.ivperiptero.com/uploads/1/3/2/6/132680796/9579c76b13.pdf
    • http://files.frankiefour.com/uploads/1/3/1/6/131606109/6836157.pdf
    • https://cdn.shopify.com/s/files/1/0460/9877/6228/files/33690459360.pdf
    • https://cdn.shopify.com/s/files/1/0430/4610/9341/files/ravuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/8275/1893/files/kuterosunofuxoke.pdf
    • https://cdn.shopify.com/s/files/1/0429/3722/1276/files/13376244569.pdf
    • https://cdn.shopify.com/s/files/1/0437/9587/3949/files/80136705133.pdf
    • https://cdn.shopify.com/s/files/1/0433/0497/6548/files/migesogafubakovun.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/72996130495.pdf
    • https://cdn.shopify.com/s/files/1/0461/9137/8581/files/adverbs_worksheet_for_grade_9.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/alif_novel_episode_6_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/5371/7406/files/akuna_capital_hackerrank_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/mesalidex.pdf
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/fenasurevugazolatelu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/22994391398.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_off0000669c.bin
3ed2843221c735f821ca82aa8ab8680686144eb6f3097778a2b62b6ded301650		 pdf-font-stream PDF embedded font (sfnt) at offset 0x669C 5524 bytes
font_01_sfnt_off00007956.bin
767b3852156f81e925626ce56bad26b3aa9fa5a18a6428c095272a86e5531544		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7956 10248 bytes

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