Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fa4a7314ee717e2…

MALICIOUS

PDF

51.4 KB Created: 2020-08-17 11:23:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90980e6c2b70aff96b08b2a31bf4ea49 SHA-1: b0f965ec4df55e20f64a4cc67d7ad738c76a7fba SHA-256: 0fa4a7314ee717e2c1d20e1aa3245696a54a6f81328207cc60f8684f2e68b001
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to Shopify domains hosting other PDFs, and a critical heuristic identified it as a link farm. One prominent URL, 'https://ttraff.com/pify?keyword=conarium+trophy+guide', is flagged as a malicious redirector. The ML classifier strongly indicates maliciousness, suggesting the document's primary purpose is to redirect users to malicious infrastructure, likely as part of a phishing or SEO manipulation campaign.

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/pify?keyword=conarium+trophy+guide
    • http://files.graceinwellsville.com/uploads/1/3/0/7/130738852/xodofivubutadute.pdf
    • http://files.petiteloulou.store/uploads/1/3/0/7/130739570/b1fee91544cd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/devusosanupefuzo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2254/0185/files/marewuxifi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7192/9496/files/zopamudalur.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/77083425945.pdf
    • https://cdn.shopify.com/s/files/1/0428/7568/2972/files/abdomen_agudo_gpc.pdf
    • https://cdn.shopify.com/s/files/1/0433/5350/5946/files/vejefiwoduxamov.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/66114205923.pdf
    • https://cdn.shopify.com/s/files/1/0431/1806/7876/files/65733584835.pdf
    • https://cdn.shopify.com/s/files/1/0429/4456/1318/files/83643005884.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/baxijefonuta.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9295/files/complex_variables_and_applications_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8709/files/25571435594.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_off00008ced.bin
a3bf104dd6f40c6e4cafb004865b8e96a99f85f884df2d0b0451d05ca370ff4a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CED 5168 bytes
font_01_sfnt_off00009e5b.bin
6963fcf6566ee599a945cf5d4437d072febca7bd8e55e22fd5bdfce8231f1f8b
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E5B 10044 bytes