Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c62597f435b0340…

MALICIOUS

PDF

37.3 KB Created: 2020-08-23 08:54:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7118808584e655a2e68c96dbd4c90b1 SHA-1: ede38d514ec40e17231926e7bb654f755fe8629b SHA-256: 0c62597f435b034026477f19e905b4bcb5261e07b08b5db2d8a9d17abf7aecfc
154 Risk Score

Malware Insights

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

The PDF contains a link farm with 17 external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). The ML classifier strongly indicates maliciousness. The document body, though obfuscated, contains the URL https://ttraff.com/pify?keyword=amman+devotional+cut+songs+free, suggesting a lure to a malicious redirector.

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=amman+devotional+cut+songs+free
    • http://dawuxejop.tavisdupreez.com/uploads/1/3/1/4/131438304/migakiwutekufalawez.pdf
    • http://files.therochestergarden.com/uploads/1/3/1/6/131636678/xepamurejorax.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/lavabuporuxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6322/files/jasper_reports_server_api.pdf
    • https://cdn.shopify.com/s/files/1/0430/8841/2836/files/25051428158.pdf
    • https://cdn.shopify.com/s/files/1/0433/7745/9363/files/4570022175.pdf
    • https://cdn.shopify.com/s/files/1/0429/3450/1535/files/1584536876.pdf
    • https://cdn.shopify.com/s/files/1/0431/0152/0029/files/kerazubelevifozut.pdf
    • https://cdn.shopify.com/s/files/1/0434/3123/1644/files/isometric_drawing_exercises_with_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0437/6441/6661/files/american_thyroid_association_guidelines_hyperthyroidism.pdf
    • https://cdn.shopify.com/s/files/1/0436/7423/9129/files/xujifezapulesudarisis.pdf
    • https://cdn.shopify.com/s/files/1/0431/4028/4583/files/pubisaru.pdf
    • https://cdn.shopify.com/s/files/1/0436/3796/4960/files/13820931771.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/negewezopegosifi.pdf
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/winexar.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/xafezasi.pdf
    • https://cdn.shopify.com/s/files/1/0435/3350/0565/files/badugupobonot.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_off000053d6.bin
73318095f1ed77868b3a5ae5505936d5a342da9c2b8a45e03332641c59fe1b27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53D6 5392 bytes
font_01_sfnt_off00006614.bin
213a3cc3e8289f865b3c02b9db280e02d8d3fc3be1911b5ef6a35f9fac30c7be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6614 10096 bytes

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