Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8b087cb9711688c…

MALICIOUS

PDF

49.1 KB Created: 2020-08-22 23:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60f14b2f992bb87772bf5103679fa58f SHA-1: aefdc413a0a81f3a3c2fb4947a7d0b2be2adca43 SHA-256: f8b087cb9711688c0b8ece4d8d4b63e4757208e5e3f79ed035418e439e6b1726
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=anastasio+aquino+libro+pdf'. Another critical heuristic identified a PDF link farm, indicating a large number of external links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF links, suggesting a lure to download or access malicious content.

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=anastasio+aquino+libro+pdf
    • http://files.lancerpep.org/uploads/1/3/1/4/131453817/kugorojudirinedati.pdf
    • http://files.drferreras.com/uploads/1/3/1/4/131453267/nizibagasatupa_pumipopubosotu_soweburiboka_tifujabeso.pdf
    • https://cdn.shopify.com/s/files/1/0432/0336/2973/files/lakadafidepamupiwek.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/43629897461.pdf
    • https://cdn.shopify.com/s/files/1/0431/6246/8514/files/lumutinofufo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1236/6231/files/6345556457.pdf
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/surifelerofe.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/kadadawanolojuwupigiji.pdf
    • https://cdn.shopify.com/s/files/1/0438/3778/4224/files/roxio_easy_vhs_to_dvd_3_plus.pdf
    • https://cdn.shopify.com/s/files/1/0440/7872/7318/files/96904559459.pdf
    • https://cdn.shopify.com/s/files/1/0432/7361/7568/files/heat_treatment_of_copper_alloys.pdf
    • https://cdn.shopify.com/s/files/1/0430/0800/0163/files/50083474771.pdf
    • https://cdn.shopify.com/s/files/1/0431/6590/9146/files/gewekopuxusifasuxipamap.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_off00008054.bin
dd89d76bb32e3fc3c3a6c4e74c50fe4274da938854627b2bc2ce85af0b472669		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8054 5288 bytes
font_01_sfnt_off00009250.bin
9d0d40e9db1ba12ee3ef8887e0b01c798adee2834bc44ef1777869ee59dd5706		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9250 10912 bytes

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