Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce69b27cffb89a82…

MALICIOUS

PDF

42.9 KB Created: 2020-08-06 16:08:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e74449c576fa890dcd960587ef16850b SHA-1: 5af325d670027cf810751091782d002baa591fee SHA-256: ce69b27cffb89a82a34fcb3884ff209f9d5cff189a8c3f140ccacb6706c8dcb9
154 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects through ttraff.cc. This redirector is likely used to funnel victims to malicious content. The ML classifier strongly indicates maliciousness, and the presence of a redirector URL supports a phishing or social engineering attack pattern.

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/pify?keyword=advanced+javascript+tutorial+pdf+free+download
    • http://files.quantumpoint.org/uploads/1/3/0/8/130874031/fexurugomaseba_livorejalolokib_kuluvewowa.pdf
    • http://files.nackip.com/uploads/1/3/0/8/130874012/vewufisinon.pdf
    • http://files.kathleenrupff.com/uploads/1/3/2/7/132740852/fbd3c2d16.pdf
    • https://cdn.shopify.com/s/files/1/0428/6509/8918/files/deezloader_remix_descargar.pdf
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/50070374890.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1832/files/29812390750.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/sibezirikawexomafipaj.pdf
    • https://cdn.shopify.com/s/files/1/0437/1909/8522/files/11996108321.pdf
    • https://cdn.shopify.com/s/files/1/0434/7337/1288/files/nozewitoviled.pdf
    • https://cdn.shopify.com/s/files/1/0434/2641/4749/files/clone_a_branch_git.pdf
    • https://cdn.shopify.com/s/files/1/0435/3287/7976/files/xatidugipelumenaxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/vudekotapob.pdf
    • https://cdn.shopify.com/s/files/1/0434/4938/5126/files/1278908381.pdf
    • https://cdn.shopify.com/s/files/1/0431/6237/0210/files/59441607070.pdf
    • https://cdn.shopify.com/s/files/1/0437/2905/9989/files/adobe_premiere_2020_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/ruzinelukoja.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_off000067dd.bin
58085c8c19893d732d3c90de5ca53f8d148e073d501c85148d48dfbf1be0ed07
pdf-font-stream PDF embedded font (sfnt) at offset 0x67DD 5364 bytes
font_01_sfnt_off00007a47.bin
4d073f11d22d7717703f9cedbe545139310564d4ec9e6b5f83200da07b35286d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A47 10720 bytes