Malicious PDF — malware analysis report

Static analysis result for SHA-256 ece3afbaa01358fc…

MALICIOUS

PDF

41.5 KB Created: 2020-08-29 19:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fcfe80b46c770d10b12d5da1b0c87615 SHA-1: ec45449c2a6ae30f8385b82d2d04f8df31d2eeb9 SHA-256: ece3afbaa01358fc465736a1519bffcd9506ab3d8405f0e5cfd84e7a5f121d5f
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF contains numerous embedded links, with a critical heuristic firing for a PDF link to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.com/wix?keyword=puissance+et+%25C3%25A9nergie+%25C3%25A9lect. The document body appears to be obfuscated or corrupted, but the presence of multiple links suggests a link farm or redirection attempt to a malicious site.

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.com/wix?keyword=puissance+et+%25C3%25A9nergie+%25C3%25A9lect
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/fugoganizejusoneb.pdf
    • https://cdn.shopify.com/s/files/1/0430/0547/7023/files/mapa_iberia_tomtom_xl.pdf
    • https://cdn.shopify.com/s/files/1/0438/7084/7131/files/plantilla_para_escribir_recto.pdf
    • https://cdn.shopify.com/s/files/1/0430/9159/1321/files/wonowixomorovag.pdf
    • https://cdn.shopify.com/s/files/1/0433/9168/0666/files/acfe_fraud_tree.pdf
    • https://static.usrfiles.com/ugd/b8c837_4655a326cd484d3082b8df47b7d8b63f.pdf
    • https://static.usrfiles.com/ugd/a467d2_48467bf0f1494c6bad726f8d8664ba54.pdf
    • https://static.usrfiles.com/ugd/b65acf_a6a5f69404cc4bf1bfae150842197ca0.pdf
    • https://static.usrfiles.com/ugd/b8c837_277be9e0bb5047dc8b8d9105d319aac5.pdf
    • https://static.usrfiles.com/ugd/b8c837_32b88497fe0d4453ae700cd695b252f5.pdf
    • https://static.usrfiles.com/ugd/8de238_e67eb03f852242ee94323b23b233026c.pdf
    • https://static.usrfiles.com/ugd/b8c837_16a197206b3d42e798e881b61fe74dd9.pdf
    • https://static.usrfiles.com/ugd/b8c837_4f9a8776b2b6404994a48ea1ae0a31d8.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/zolizefobo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/fumesekomidirowij.pdf
    • https://cdn.shopify.com/s/files/1/0431/9431/9009/files/93670143157.pdf
    • https://cdn.shopify.com/s/files/1/0435/9100/8419/files/19821816650.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_off00005fa1.bin
b61586729fcd1400549919f96a7c4e25b859036e0ab5249b4eefdc43e3d8ab09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FA1 5108 bytes
font_01_sfnt_off000070be.bin
dd48a1108a2c3d48cd9bc9f4e4b35aa17ee9e21e7d9b38e0cdd27bc695e79ac0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70BE 12080 bytes

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