Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dd879a9e1895096…

MALICIOUS

PDF

41.0 KB Created: 2020-09-01 04:22:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7bc01d6dadffde2928fc705da79bbc06 SHA-1: ecc1547ba2533e4185f3cedeb6e5150a004a0a2f SHA-256: 9dd879a9e189509688ab627a4df6fe8a00030a061cd1d01696a47eadf3334bab
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 PDF link farm. One of the primary links, 'https://ttraff.cc/wix?keyword=adventure+games+apk+uptodown', points to a known malicious redirector. This suggests the document's purpose is to lure users to malicious websites, likely for phishing or to download malware. The presence of numerous links to external PDFs, even if some are benign, contributes to a link farm strategy.

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=adventure+games+apk+uptodown
    • https://static.usrfiles.com/ugd/3ceeb9_ede0389ec066403db7238ac2cfaa4bff.pdf
    • https://static.usrfiles.com/ugd/0df15e_0ffdc7bb3f5a4fa6b4aa97a5f07d1b67.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f37ad85f8bb4804a2d9f90703fdbead.pdf
    • https://static.usrfiles.com/ugd/0baf77_0b8f92eaf8fc4f8d9446b61a7057f849.pdf
    • https://cdn.shopify.com/s/files/1/0431/4369/2445/files/repojutiwu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2060/5848/files/auto_accident_report_form.pdf
    • https://cdn.shopify.com/s/files/1/0427/9068/2783/files/applebee_s_2_for_20_menu.pdf
    • https://static.usrfiles.com/ugd/b8c837_67e202df558441b9b48a5e8b9e5731da.pdf
    • https://static.usrfiles.com/ugd/74e905_fb881729c564482db1e26ded2f9fef79.pdf
    • https://static.usrfiles.com/ugd/a18aa6_5975c56a532b45cf96e7e8c51b3793ca.pdf
    • https://static.usrfiles.com/ugd/c162b3_058a221c62ef4a65a9dc1dceeb9b4f96.pdf
    • https://static.usrfiles.com/ugd/bfbc46_7509b5a52b164745963dc0a7dacf06c7.pdf
    • https://static.usrfiles.com/ugd/b8c837_7471b1917eb94287b999ede0c3e7c742.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_off000056b8.bin
51fe0b815d6e65072101faeb7ff5b6634924a7f3f71d6347dd395a872ee3c4bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B8 5452 bytes
font_01_sfnt_off00006942.bin
15ff0a92c7d54dbe9d96c879e03e4fb62c2373a6349f0c70961a3cdabeec7b4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6942 14984 bytes

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