Malicious PDF — malware analysis report

Static analysis result for SHA-256 f586c4d2652554ae…

MALICIOUS

PDF

42.9 KB Created: 2020-08-09 08:08:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a55d495991dcfd937a05149a96a610ca SHA-1: e170a0038edc522277b5a0124f31a518915507f1 SHA-256: f586c4d2652554aedba8ca8b409e22bc3b648e934df05a4dac89cbd9919faf3f
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific URL pointing to ttraff.com, identified as a malicious redirector. The document body, though partially corrupted, contains text related to job search strategies, suggesting a lure to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=estrategias+de+b%25C3%25BAsqueda+de+empleo+pdf
    • http://files.loveleighyoga.com/uploads/1/3/0/7/130775876/nivebidasabov.pdf
    • http://files.emilygwilcox.com/uploads/1/3/0/7/130738524/2d585074d326ea.pdf
    • http://files.coachdoh.com/uploads/1/3/1/4/131437987/visujefojupikoz-xalox-vajabimoto.pdf
    • http://files.padreamplayground.org/uploads/1/3/0/7/130739153/zesezevitinovijafeku.pdf
    • http://files.thesouthernbyrd.com/uploads/1/3/1/0/131071157/jojelowufukugaxel.pdf
    • https://cdn.shopify.com/s/files/1/0437/9541/5189/files/jifudiku.pdf
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/3540723782.pdf
    • https://cdn.shopify.com/s/files/1/0432/0637/7633/files/tegikotimorubosixokod.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3281/files/66451551776.pdf
    • https://cdn.shopify.com/s/files/1/0428/5959/3894/files/lozetijisuboguduwozebunij.pdf
    • https://cdn.shopify.com/s/files/1/0435/8042/4351/files/boserixurikokif.pdf
    • https://cdn.shopify.com/s/files/1/0429/8198/2361/files/vosid.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/65587220918.pdf
    • https://cdn.shopify.com/s/files/1/0430/9388/5089/files/biwurika.pdf
    • https://cdn.shopify.com/s/files/1/0433/0756/5209/files/55392359717.pdf
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/wogafexusewadesewaf.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_off00006527.bin
d78d2678d67b2915323959a23a02f10ceab6be8467b4a64568f1831ebf530b78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6527 5700 bytes
font_01_sfnt_off0000783b.bin
cbce1ca5e4b2d8bb82ffd8eb61e256c61e6f1d694886bc182785a30ed0ef788a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x783B 11040 bytes

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