Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7ac463bbebad81d…

MALICIOUS

PDF

38.3 KB Created: 2020-08-31 02:49:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73ffa2e4f974174b474b34247c3a4c94 SHA-1: bbfcfd31a9a044d98e94298e5d039bbe409efec6 SHA-256: d7ac463bbebad81da1d81fc8f8bbb0eed31fc3d61d864419c0ffb6cf363ce403
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/wix?keyword=o+sahiba+mp3+free+download', is the primary indicator of malicious intent. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely for SEO manipulation or to host further malicious content. The primary goal appears to be directing users to malicious infrastructure through a deceptive download lure.

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=o+sahiba+mp3+free+download
    • https://cdn.shopify.com/s/files/1/0433/8014/6343/files/48957605602.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43561311815.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zejakepujubuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/6052/6246/files/hl-_2270dw_driver.pdf
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/3670205935.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7500/files/82834886581.pdf
    • https://cdn.shopify.com/s/files/1/0449/4393/3595/files/nanuwigupogog.pdf
    • https://cdn.shopify.com/s/files/1/0433/4721/4486/files/bofepiwasuju.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9014f6f1a234e708e17ecb817c429d1.pdf
    • https://static.usrfiles.com/ugd/9e14ca_bc09e0caf6fd4579af539ee1e4b091b7.pdf
    • https://cdn.shopify.com/s/files/1/0434/4958/1724/files/cepten_mzik_indirme.pdf
    • https://cdn.shopify.com/s/files/1/0429/3092/9827/files/68716733497.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/verofokosabawubudu.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_off00005027.bin
4822ce596ec1bb68cd4f22ab387d25a43732eb7b7f74c978dfcf2d6729b1e260		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5027 5704 bytes
font_01_sfnt_off0000636e.bin
f454a13cec7cfc2c97d035a97226c06a031caa333481a331e350efe13594a71e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x636E 12932 bytes

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