Malicious PDF — malware analysis report

Static analysis result for SHA-256 54fea4ade5e51907…

MALICIOUS

PDF

35.5 KB Created: 2020-08-30 22:48:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52a2db8e252ac56cb63faa626dccf514 SHA-1: d7bab75859afe1e18b715b915e695fae3acd74e1 SHA-256: 54fea4ade5e51907188dcb1b9a4b7d992f7957c89a9bb01cf325cfa72cbf9998
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, suggesting an attempt at SEO poisoning to drive traffic to malicious sites. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.cc/wix?keyword=mummy+the+curse+pdf+free'. The document body, though heavily corrupted, contains fragments of text related to movie titles and URLs, reinforcing the lure. 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.cc/wix?keyword=mummy+the+curse+pdf+free
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/short_film_the_double_helix_answers.pdf
    • https://cdn.shopify.com/s/files/1/0437/2961/7057/files/6519325229.pdf
    • https://cdn.shopify.com/s/files/1/0434/6645/7254/files/car_wash_business_in_kenya.pdf
    • https://static.usrfiles.com/ugd/34ec99_76ab5519be5d4944aa08916194681f12.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d68b757b6564f6597666d79b09c24aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_928557fc88504efd843ea792ab26c7a0.pdf
    • https://static.usrfiles.com/ugd/b8c837_222e21fa17104e15808008453b568317.pdf
    • https://static.usrfiles.com/ugd/b8c837_9b3437ac93af4eedb579bd23c38eb787.pdf
    • https://cdn.shopify.com/s/files/1/0437/6369/5770/files/ielts_writing_marking_criteria.pdf
    • https://cdn.shopify.com/s/files/1/0430/7399/4905/files/affine_transformation_function_matlab.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/32935333389.pdf
    • https://cdn.shopify.com/s/files/1/0431/4031/7335/files/bimomip.pdf
    • https://cdn.shopify.com/s/files/1/0431/3769/5906/files/million_dreams_piano_sheet_free.pdf
    • https://static.usrfiles.com/ugd/b8c837_0fdf1f4ee5e44b6f9fe23d57320f2aea.pdf
    • https://static.usrfiles.com/ugd/77d535_22e98e9c9d8e4c8c85005aac27c83606.pdf
    • https://static.usrfiles.com/ugd/b8c837_62de667f83a548d18f15d58114afdbd6.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_off00004d65.bin
71eab4cbaad4bdd4b5b93b88c20b8199ca16b31d5a68a8da622e55a33d4a5b73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D65 5260 bytes
font_01_sfnt_off00005f36.bin
fcf7397c80b168ea2a73c62435c1e3045a1a0f9fc074eb1cb0f47c010f1fc450		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F36 9948 bytes

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