Malicious PDF — malware analysis report

Static analysis result for SHA-256 0df19086c21fba69…

MALICIOUS

PDF

44.8 KB Created: 2020-09-01 07:16:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f6ae495ca2dd6a9309c5825afe212f61 SHA-1: 31dcf466b8f612966a63ddd3313fbb58e40791a3 SHA-256: 0df19086c21fba69c96fcccef8fa4907122468f1f3fff273b9b53eb7dcced312
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to host further malicious content or phishing pages. The document also exhibits characteristics of a link farm, with numerous embedded links to external PDFs, suggesting an attempt to manipulate search engine results or distribute content broadly. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

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=chiari+malformation+type+1+after+surgery
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/8269/4312/files/tilarajemazasexixuvanem.pdf
    • https://cdn.shopify.com/s/files/1/0433/4095/5803/files/16246714809.pdf
    • https://cdn.shopify.com/s/files/1/0452/6188/1506/files/administracao_publica_conceito.pdf
    • https://cdn.shopify.com/s/files/1/0440/6027/8949/files/dotoferuzoju.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3641/files/26818284146.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc2a8d158dd94335a705d6c1246d6646.pdf
    • https://static.usrfiles.com/ugd/2e79a6_19847dde024e4525bff69f08d76823c9.pdf
    • https://static.usrfiles.com/ugd/2b25b5_d476b38106994ba98c43a842a5e4542d.pdf
    • https://static.usrfiles.com/ugd/b8c837_34adfaa9bc7647e0a830fd03a0230aa4.pdf
    • https://static.usrfiles.com/ugd/b8c837_db409db4f6a241769f915350bc4ae4e7.pdf
    • https://cdn.shopify.com/s/files/1/0431/0486/2375/files/dusizoku.pdf
    • https://cdn.shopify.com/s/files/1/0437/3282/8314/files/vemugijetunowinenan.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7333/files/villagers_and_heroes_android_requirements.pdf
    • https://cdn.shopify.com/s/files/1/0433/8250/5628/files/39146216065.pdf
    • https://cdn.shopify.com/s/files/1/0438/9876/5480/files/fanon.pdf
    • https://cdn.shopify.com/s/files/1/0428/5097/5910/files/sukukus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lipowu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/jaxugetenakomesuwit.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f4a.bin
2627699a5ddea1730697780c3c1dcaa9a272688976e8707c753d4c8788e35bcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4A 5376 bytes
font_01_sfnt_off00008176.bin
acfcbfa987792d7d6ef08f1aeccbc630d650acd13fb0a4d40c70630b6f9d0f71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8176 10832 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.