Malicious PDF — malware analysis report

Static analysis result for SHA-256 442bd9ed7337cf5a…

MALICIOUS

PDF

60.1 KB Created: 2020-08-30 19:55:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8cab9d1dfe695eccd675c8ff3c0df78b SHA-1: 8e8b9c6f8a6aefa4e7d62ab98ca6ae96fdbb200b SHA-256: 442bd9ed7337cf5a4aa2a0bb1cd5c20b5b89cb4d52fb0e0b614d39ac9f2ec89c
120 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of embedded links, indicating a link farm strategy. The primary malicious URL identified is https://ttraff.cc/wix?keyword=album+%25C3%25A0+structure+r%25C3%25A9p%25C3%25A9titive+cycle+1, which is likely used to direct users to a malicious destination. The document body contains garbled text but also includes the malicious URL and several other benign-looking PDF links, reinforcing the link farm heuristic.

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=album+%25C3%25A0+structure+r%25C3%25A9p%25C3%25A9titive+cycle+1
    • https://static.usrfiles.com/ugd/b8c837_879b8725eb8b4873a9972f7b9620de61.pdf
    • https://static.usrfiles.com/ugd/913720_85a483ab283e4d1d8f66ccab8191df98.pdf
    • https://static.usrfiles.com/ugd/b8c837_b22f59b59907468798f4fda32dbf3f5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_b18c0ffc66744c3c871f2457452c1d9d.pdf
    • https://cdn.shopify.com/s/files/1/0431/3150/2749/files/you_can_trust_the_bible_john_macarthur.pdf
    • https://cdn.shopify.com/s/files/1/0434/2677/5196/files/65662135186.pdf
    • https://cdn.shopify.com/s/files/1/0431/0473/1300/files/rosipo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7965/3789/files/tirajajinupowogaxevutuv.pdf
    • https://static.usrfiles.com/ugd/b8c837_82ca98d220124fa3a1cbac718eb95ff2.pdf
    • https://static.usrfiles.com/ugd/6846fe_937c5a4bef294ee98018de9e8ad27ba9.pdf
    • https://static.usrfiles.com/ugd/b8c837_16794e15c5e14437a457211c67f53bce.pdf
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/sexivewulipogi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6903/1078/files/gifijejodawurizoji.pdf
    • https://cdn.shopify.com/s/files/1/0430/9663/7597/files/89141676763.pdf
    • https://cdn.shopify.com/s/files/1/0436/2603/7411/files/belden_5100ue.pdf
    • https://cdn.shopify.com/s/files/1/0429/2562/1404/files/93096264290.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000082a3.bin
f0d75c49eb9e22958dde18ffe43bbfe91e92783100b42dc89117a18f2ac6d175		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82A3 5252 bytes
font_01_sfnt_off00009447.bin
1412095d63591387e804225aba313c9a1d72da1af821561be1cf0f78b59dec2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9447 12660 bytes
font_02_sfnt_off0000bb9c.bin
7ed423fd6f64a2accaab24a388a557cab9318e50e2ef4475c53ca1e35efe0f17		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB9C 16632 bytes
font_03_sfnt_off0000d2ad.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2AD 4324 bytes

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