Malicious PDF — malware analysis report

Static analysis result for SHA-256 37b6d5e451280516…

MALICIOUS

PDF

43.7 KB Created: 2020-08-31 02:13:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d4b66179bc7a2ab22034b4b70b1905b SHA-1: e109306db5427842e16ae2bffe5fc1f6a1e003e4 SHA-256: 37b6d5e451280516e840cdbc67b9d522f6ed7f890e33b16abc1ecb9d31f799b4
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of numerous external links, a technique often used in SEO link farms to distribute malicious content. One of the embedded URLs, https://ttraff.com/wix?keyword=numero+de+stanton+en+transferencia+d, is flagged as a known malicious redirector. The document body contains garbled text but includes the same suspicious URL and several benign-looking Shopify URLs, suggesting a potential lure to a malicious site disguised within a seemingly legitimate context.

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/wix?keyword=numero+de+stanton+en+transferencia+d
    • https://static.usrfiles.com/ugd/01bc73_780259cab08a4ee7b0c051779ebf6de7.pdf
    • https://static.usrfiles.com/ugd/8ab72e_a621842524c4479abf624316f517ff4f.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7ad1b28489c4ecb8a9d12318e518c9b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0112edbed89145b9be46dabcb3dd0050.pdf
    • https://cdn.shopify.com/s/files/1/0439/1020/1499/files/pumotujuxigiva.pdf
    • https://cdn.shopify.com/s/files/1/0431/5398/1594/files/puveb.pdf
    • https://cdn.shopify.com/s/files/1/0432/5684/0350/files/25190515125.pdf
    • https://cdn.shopify.com/s/files/1/0447/1400/0538/files/wovoxerolagodo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xizujebekox.pdf
    • https://cdn.shopify.com/s/files/1/0448/1400/8486/files/srimad_bhagavatam_malayalam_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/fukakata.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/wijepigarukoru.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_off00004ca1.bin
ca4113c57407061427f0b0fafda5934b819c64b52396b08ef16d5520ce202858		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA1 5104 bytes
font_01_sfnt_off00005de5.bin
7adc30c5c194f4fc35006110d556f0aedba27860a13dd09283f7d71f0e5693f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE5 14988 bytes
font_02_sfnt_off00008bc8.bin
84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC8 16060 bytes

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