Malicious PDF — malware analysis report

Static analysis result for SHA-256 015784a2288450be…

MALICIOUS

PDF

47.9 KB Created: 2020-08-30 04:21:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04aca87c8af4b1450c51f3e12dadc4cd SHA-1: 1ad4fed3df18f8507cae86800bb1ea13db5983d6 SHA-256: 015784a2288450be15149c57a47b039ee2c94b001e082f6c021ecf9de1015e1f
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/wix?keyword=don+carlos+three+little+words+mp3+do, which is flagged as a malicious redirector. The document body itself is heavily obfuscated but contains references to this URL and other PDF files hosted on Shopify, suggesting a link farm designed to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=don+carlos+three+little+words+mp3+do
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/gas_darah_arteri.pdf
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/muzuzezebi.pdf
    • https://cdn.shopify.com/s/files/1/0439/5712/5278/files/70340953069.pdf
    • https://cdn.shopify.com/s/files/1/0435/6295/9006/files/6519760742.pdf
    • https://cdn.shopify.com/s/files/1/0461/8289/1673/files/19670172204.pdf
    • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/guxunisisozatupum.pdf
    • https://cdn.shopify.com/s/files/1/0432/2282/7165/files/number_analogy_formula.pdf
    • https://cdn.shopify.com/s/files/1/0440/5982/0182/files/115_e7_bd_91_e7_9b_98.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7238/files/patient_consent_form_for_case_report.pdf
    • https://cdn.shopify.com/s/files/1/0462/3810/5749/files/wedakagepezifumodazem.pdf
    • https://static.usrfiles.com/ugd/6cf0f5_ab6cb6f72b69435c9caf91bb0c685f3c.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc080baa162646358e8b757e5896221d.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f1def0e3a1f403d9c0b6a304dd4e590.pdf
    • https://static.usrfiles.com/ugd/b8c837_b44f45c77d03440097d8429de3e8c9a8.pdf
    • https://static.usrfiles.com/ugd/724bd4_c80de1972492464fb923499ab12ac3a0.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000671f.bin
d43df94d4ca7101c8c68e71d74af9668ab9138c860bd74dd63e10e9ac994be69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x671F 5356 bytes
font_01_sfnt_off00007931.bin
34eb5dfd51c168797b2484b4241a52f789e2c94c9f96a7a7eabdd147587851ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7931 13904 bytes
font_02_sfnt_off0000a4dd.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4DD 4324 bytes

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