Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a765aefb6dcb0c…

MALICIOUS

PDF

38.4 KB Created: 2020-08-28 17:03:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cb37d7867f8d5fa51e15837874475a2 SHA-1: 9c5a5e58dd1ac7c72b1d196b634945d46f2d7025 SHA-256: 44a765aefb6dcb0c183434f273e41c319c067d018f0c3715998d0918db6bbaf1
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 URLs, with a critical heuristic firing indicating a PDF link farm. One of the primary URLs, 'https://ttraff.me/pify?keyword=second+life+legacy+body', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the document's purpose is to direct users to malicious content through these links.

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.me/pify?keyword=second+life+legacy+body
    • http://files.acfields.com/uploads/1/3/1/4/131454116/bumazojojudiro.pdf
    • http://lesiw.neoharmony.com/uploads/1/3/0/7/130738943/rogutevisivew.pdf
    • https://cdn.shopify.com/s/files/1/0436/4081/5774/files/tagufonera.pdf
    • https://cdn.shopify.com/s/files/1/0438/2975/6066/files/renaissance_periodization_ebook.pdf
    • https://cdn.shopify.com/s/files/1/0439/9579/1518/files/aade_extensin_a_cdigo_de_estudio.pdf
    • https://cdn.shopify.com/s/files/1/0440/7872/7318/files/26681745414.pdf
    • https://cdn.shopify.com/s/files/1/0438/5597/0454/files/66680943084.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0019/files/gamazomogixosik.pdf
    • https://cdn.shopify.com/s/files/1/0432/1237/4174/files/muwetoxexodegazidojejada.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_off00005913.bin
95ebb5f067e929c673756cf386c229acebfd1f8af003f70cbb556ff091ac51c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5913 5260 bytes
font_01_sfnt_off00006b09.bin
e0ef989ff218f14f30816187b2edbebd908310f2533b74cbcd40dacfbe8fa89b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B09 10084 bytes

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