Malicious PDF — malware analysis report

Static analysis result for SHA-256 834112ed1b8c3a48…

MALICIOUS

PDF

37.0 KB Created: 2020-08-21 19:33:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e61d7ae0f75f1f196fb822e7e08f315 SHA-1: cff82c82886ede9a1e428eb0bf82b4241d5f644f SHA-256: 834112ed1b8c3a48c427d10bbb052cae7650faa77eb6a941086193fd18978e69
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure at https://ttraff.com/pify?keyword=dimplex+quantum+installation+guide. The document body, though heavily obfuscated, contains references to installation guides and URLs, suggesting a lure to external content. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of 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/pify?keyword=dimplex+quantum+installation+guide
    • http://zarewise.mmzurita.com/uploads/1/3/0/8/130874222/kidavugit-kiwejesexi-lujivorega.pdf
    • http://japeli.eltprodev.com/uploads/1/3/2/7/132740285/kugupipuwage-bageboto-beburunasepobub.pdf
    • http://files.chicagoartizen.com/uploads/1/3/1/0/131070674/lebur.pdf
    • http://files.edusteminitiative.org/uploads/1/3/1/4/131483336/2590755.pdf
    • http://files.lasertoenailsanfrancisco.com/uploads/1/3/1/4/131453348/2863879.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/5274615257.pdf
    • https://cdn.shopify.com/s/files/1/0429/8198/2361/files/93484479850.pdf
    • https://cdn.shopify.com/s/files/1/0439/4100/3432/files/naderataladex.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1641/files/47816430520.pdf
    • https://cdn.shopify.com/s/files/1/0430/3942/4669/files/45638809660.pdf
    • https://cdn.shopify.com/s/files/1/0434/5187/5494/files/padiwomeforetitawut.pdf
    • https://cdn.shopify.com/s/files/1/0437/3407/3505/files/19764009676.pdf
    • https://cdn.shopify.com/s/files/1/0431/5077/0342/files/carbon_family_properties.pdf
    • https://cdn.shopify.com/s/files/1/0440/5621/5702/files/questoes_balanceamento_quimico.pdf
    • https://cdn.shopify.com/s/files/1/0430/5564/4823/files/91806486492.pdf
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/gamakisurosa.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_off00005340.bin
2c2ae9276815dc782db50b039fce73549fcff6eb1ef581b58bf866371251fe67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5340 5376 bytes
font_01_sfnt_off00006570.bin
347d5621bc5fa7abdd59957d8d60c84b4f1eeb49f55aa6573cd8d837b8f7775e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6570 9848 bytes

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