Malicious PDF — malware analysis report

Static analysis result for SHA-256 da92637fafd8835f…

MALICIOUS

PDF

39.4 KB Created: 2020-08-23 15:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62dffc9dc3266607966119f837d9795d SHA-1: 1c24e6ccb0ca2c668daf556263f58340874f7b8b SHA-256: da92637fafd8835f71f5aa79a85c922cb721f0ce5687d14468b7088ce65da2cb
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, many pointing to Shopify domains, which is indicative of a link farm or SEO poisoning attack. One of the primary links, 'https://ttraff.com/pify?keyword=chinchilla+petco+care+sheet', is flagged as a malicious redirector. This suggests the document's purpose is to redirect users to malicious sites, likely for phishing or malware distribution.

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/pify?keyword=chinchilla+petco+care+sheet
    • http://files.rationalinvestors.net/uploads/1/3/1/4/131438069/6383107.pdf
    • http://files.cityalliancesr.org/uploads/1/3/1/1/131163712/5ad5a4210041.pdf
    • http://ruriboz.mappingglobalchange.org/uploads/1/3/2/6/132682883/3681386.pdf
    • http://files.oakstreetpto.com/uploads/1/3/0/8/130814057/b6af5a109d3ccba.pdf
    • https://cdn.shopify.com/s/files/1/0432/2272/8866/files/toxelejomara.pdf
    • https://cdn.shopify.com/s/files/1/0459/7710/8647/files/bannermen_game_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/0589/5075/files/acknowledgement_of_service_form_d10_uk.pdf
    • https://cdn.shopify.com/s/files/1/0433/7801/6406/files/mapa_de_puerto_rico_con_los_pueblos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/total_money_makeover_budget_forms.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/44048451195.pdf
    • https://cdn.shopify.com/s/files/1/0431/9910/3136/files/nomugizezafoweladurajowun.pdf
    • https://cdn.shopify.com/s/files/1/0431/5637/3670/files/4766246068.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0146/files/67600263947.pdf
    • https://cdn.shopify.com/s/files/1/0457/6709/8534/files/93853404577.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_off00005f17.bin
9bc803ea320b41d8b74c1a4bd390f1c3fe7c28819f1a500c6e241f2c63e81d93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F17 4928 bytes
font_01_sfnt_off00006fbd.bin
4d2d331b4308cea7bdc77c9467da13a7933e1315bf2d2ae92bc9991e0a5930dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FBD 9744 bytes

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