Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aa3961c0f7e9983…

MALICIOUS

PDF

42.2 KB Created: 2020-08-15 03:31:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c5073b1e2abeab4cdb437ce273a18cf SHA-1: 6a7accbfe518007cb9894d818e548f09695f1076 SHA-256: 4aa3961c0f7e9983d8c0dba5ca0fb5f2475fc071b3f46478d33c8664d0185ca6
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, https://ttraff.ru/pify?keyword=appalachian+trail+packing+guide, points to known malicious redirector infrastructure. This suggests the document's primary purpose is to lure users to malicious sites. No scripts were extracted from this sample.

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=appalachian+trail+packing+guide
    • http://files.ongoldenpondguesthouse.com/uploads/1/3/0/7/130775734/taxumupojuresig-suvefodonefe-begupaxobagupux.pdf
    • http://files.pfcmooremess.com/uploads/1/3/0/7/130776072/65264bc54.pdf
    • http://files.sneakerempireorange.com/uploads/1/3/1/4/131483371/bakutiji.pdf
    • https://cdn.shopify.com/s/files/1/0434/4391/2865/files/chhattisgarh_map_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/4327/3369/files/vukuxidipinukas.pdf
    • https://cdn.shopify.com/s/files/1/0434/5823/2473/files/amazon_appstore_apk.pdf
    • https://cdn.shopify.com/s/files/1/0437/8315/9957/files/71075125708.pdf
    • https://cdn.shopify.com/s/files/1/0433/3069/9414/files/napoleon_bonaparte_libros.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/swayam_prabha.pdf
    • https://cdn.shopify.com/s/files/1/0434/6131/2676/files/jinuj.pdf
    • https://cdn.shopify.com/s/files/1/0439/7685/1614/files/malaimalar_tamil_news_paper.pdf
    • https://cdn.shopify.com/s/files/1/0439/5512/6430/files/anti_inflammatory_diet_and_recipe_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/bidaramud.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ca2.bin
2aa32973f4dffca25fca1f84dfb8cd0fb9bd079971f79879addd6b65c2d00776		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CA2 4980 bytes
font_01_sfnt_off00006d75.bin
1f3a582686d98c2862578b9aa4b476092c4acff3b4169f35a6c5ac4cc7fd05c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D75 9464 bytes
font_02_sfnt_off00008de9.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE9 4324 bytes

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