Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d5076d37cdd1647…

MALICIOUS

PDF

56.6 KB Created: 2020-08-01 21:46:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0990432bb61956c808fab81bf7c6abd1 SHA-1: a44c12c1c0559b5507fa9c0291355784615709de SHA-256: 1d5076d37cdd164777e5d938bfae2c12c63b330d5bd41b5a00262ceea0c9cc11
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. The primary malicious URL, https://ttraff.cc/pify?keyword=daytona+usa+2, is a known redirector. The document body, though heavily obfuscated, contains references to this URL and other Shopify-hosted PDFs, suggesting a lure to external malicious content. No scripts were extracted, but the PDF structure and link farm indicate a drive-by download or phishing attempt.

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=daytona+usa+2
    • http://files.urbansoulalchemy.com/uploads/1/3/0/7/130776162/gelivogerowawelotas.pdf
    • http://files.ywamkaikoura.org/uploads/1/3/0/7/130776143/202c3.pdf
    • http://files.pamperedbyeartha.org/uploads/1/3/2/6/132683357/rivejapixex-jopulipexaj-bamusewuz.pdf
    • http://files.getasianfood.com/uploads/1/3/1/4/131437194/e4ab06.pdf
    • https://cdn.shopify.com/s/files/1/0433/1434/8197/files/6428381218.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/somajuzukogitewepuzu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2043/5112/files/vaxutituvixax.pdf
    • https://cdn.shopify.com/s/files/1/0432/4166/8775/files/zojifofo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/gavogur.pdf
    • https://cdn.shopify.com/s/files/1/0429/4901/7756/files/zuxiguvuwepupekawupov.pdf
    • https://cdn.shopify.com/s/files/1/0435/4395/3567/files/povatunajo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/nijusomomanesemirube.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/nirewuvizibovup.pdf
    • https://cdn.shopify.com/s/files/1/0429/7474/0639/files/36812709926.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/80651104215.pdf
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/metoxu.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/zezedido.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000090e3.bin
f4ed290e55bd89c9ad818ff474d39adebe3445e50c6f8b377611884473e9830f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90E3 5056 bytes
font_01_sfnt_off0000a26c.bin
de5ef1fe090a3334340ca215575ce55fe38ee0824f7b1410c10ff81be98419af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA26C 4784 bytes
font_02_sfnt_off0000b2d7.bin
10f3063dc6cc886b5c2da9a8f7340d3f69b3a630cb822161b0fb94aa62ed2bb2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2D7 9932 bytes

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