Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ff4db16411406b…

MALICIOUS

PDF

118.4 KB Created: 2020-08-09 22:59:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85b988e0db324a6d34194dee0938ad17 SHA-1: a4458d9b61f636f84dce0104c9af1e387045c078 SHA-256: 93ff4db16411406bfbd4615caed7231f5b65fbc8280d7454de3a66e4c76b7dd4
120 Risk Score

Malware Insights

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

The PDF contains numerous links, identified as a link farm, with a critical heuristic firing for a malicious redirector. The embedded URL in the document body, 'https://ttraff.cc/pify?keyword=libros+sobre+calidad+total+pdf', is a known malicious redirector. The document's content and structure suggest a phishing or scam attempt to redirect users to malicious infrastructure.

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/pify?keyword=libros+sobre+calidad+total+pdf
    • http://files.broindustrieslighting.com/uploads/1/3/0/7/130738841/tutowifovun.pdf
    • http://files.breastfeedingmybaby.com/uploads/1/3/2/3/132303147/7233d.pdf
    • http://sobinavaj.ankorsstreetcollege.com/uploads/1/3/2/6/132682883/diborofofilanubop.pdf
    • http://files.astrojournals.com/uploads/1/3/0/7/130776500/3227294.pdf
    • https://cdn.shopify.com/s/files/1/0440/6145/8582/files/ruxadiliru.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/doxufuvezemog.pdf
    • https://cdn.shopify.com/s/files/1/0433/1018/6654/files/96174386745.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/nanemepofitalire.pdf
    • https://cdn.shopify.com/s/files/1/0437/0300/9430/files/botefolufazatozemir.pdf
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/36554971390.pdf
    • https://cdn.shopify.com/s/files/1/0428/5736/5670/files/id_checking_guide_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/don_t_forget_your_old_shipmate_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tozonolemudafolafoxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5978/1538/files/xusuwijinolo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5754/files/49132898530.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_off00018cf1.bin
76bb6a15a9ba27d1abc93b9859e0044859a1eb33e7afa26fd5006b5299341e08		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18CF1 5228 bytes
font_01_sfnt_off00019ec5.bin
acc01fa6b67980612d84f2d1620b5a0fc849c75bf59ed8109d2332664689a2d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19EC5 14236 bytes

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