Malicious PDF — malware analysis report

Static analysis result for SHA-256 92837f389113ece6…

MALICIOUS

PDF

38.8 KB Created: 2020-08-31 04:44:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63615ae5249303072a0ce25b5851663a SHA-1: 0b639c4c4efe9a31e12acc23ebbfea616f468261 SHA-256: 92837f389113ece6180fe36aa12e47d4ada5376c0bab72d43e6519ecdc805ccd
120 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, with one identified as a malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites. The presence of a mass external PDF link farm further supports this, indicating a potential SEO manipulation or phishing campaign. No scripts were extracted from this sample.

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=new+era+partners
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/tibizotoneren.pdf
    • https://cdn.shopify.com/s/files/1/0437/9534/9661/files/absolute_balderdash_cards.pdf
    • https://cdn.shopify.com/s/files/1/0429/5137/7049/files/90279877813.pdf
    • https://cdn.shopify.com/s/files/1/0435/2193/3466/files/japifaselujap.pdf
    • https://cdn.shopify.com/s/files/1/0448/4985/6669/files/bsc_hons_physics_book.pdf
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/chatting_software_for_pc_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/reporte_averias_kolbi.pdf
    • https://static.usrfiles.com/ugd/b8c837_32307e46f22b4d13a12dade640d34f83.pdf
    • https://static.usrfiles.com/ugd/b8c837_4b64d62141da4b6abc907dac493a2b8c.pdf
    • https://static.usrfiles.com/ugd/6cfc61_6228ea2065154e6fb09663b6df3dc1ec.pdf
    • https://static.usrfiles.com/ugd/f84671_34a9b3bd06c04c81935de738862363ee.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/56200288901.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/40070121545.pdf
    • https://cdn.shopify.com/s/files/1/0438/3172/2146/files/chemical_engineering_interview_questions.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/sogulukudodom.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_off00005bd5.bin
15a62893845ae45b0967bba7deae4e64d46c3d069352ec68e30658d65de22eea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD5 4840 bytes
font_01_sfnt_off00006c6c.bin
ba90f500808f388b4200393ae64ed0ce6ab02580040ed09bcf85e5d6c12d164e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C6C 9972 bytes

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