Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c9b49fca016cb9…

MALICIOUS

PDF

43.0 KB Created: 2020-08-14 08:13:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 467b1e74ec0d28d60921867b2ede6033 SHA-1: 088e5a31a24b6d994cc8783d658bc366e00fd1ad SHA-256: e0c9b49fca016cb9a33c0b87704156540da9a4670ba4ae765b9de452a044e32b
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to a link farm designed to manipulate search engine results. One critical heuristic firing indicates a direct link to known malicious redirector infrastructure at 'https://ttraff.cc/wb?keyword=triangle%20word%20problems%20pdf'. This suggests the document's primary 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.cc/wb?keyword=triangle%20word%20problems%20pdf
    • http://files.livingbetterpt.com/uploads/1/3/0/7/130740517/mogilabo-namuwok.pdf
    • http://files.rogersalter.com/uploads/1/3/1/3/131398461/mogozevu-nanumirizoxo-visev.pdf
    • http://files.dontforgettoloveyourself.org/uploads/1/3/0/9/130969825/xuguxafujub.pdf
    • http://files.stfrancisdesales-saginaw.org/uploads/1/3/1/4/131453522/edd2715c6.pdf
    • https://cdn.shopify.com/s/files/1/0438/1832/0029/files/2211605678.pdf
    • https://cdn.shopify.com/s/files/1/0438/4784/4000/files/38708291111.pdf
    • https://cdn.shopify.com/s/files/1/0432/7401/0782/files/86634954216.pdf
    • https://cdn.shopify.com/s/files/1/0432/4986/0765/files/fumos.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/93931852748.pdf
    • https://cdn.shopify.com/s/files/1/0434/6924/2534/files/41170198227.pdf
    • https://cdn.shopify.com/s/files/1/0434/0000/3749/files/38103886498.pdf
    • https://cdn.shopify.com/s/files/1/0432/4442/1282/files/zazaxitazaruxorasexebe.pdf
    • https://cdn.shopify.com/s/files/1/0437/4013/5575/files/celiakia_dieta.pdf
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/fiveleveputeruzamobesi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2738/1924/files/genexumazesip.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_off00006952.bin
5679ef583b1e34d6ebcd4d78546f093d5335e3a9e9133e69cd8aa435583405de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6952 5540 bytes
font_01_sfnt_off00007c18.bin
79a4c56a697c567b025d07db748576e44a600e0a27c48e785f7eb53a5198881a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C18 10268 bytes

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