Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e3be8dd224310c8…

MALICIOUS

PDF

44.8 KB Created: 2020-08-03 09:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c576c88b5c1e6f5edc7791f4605dc05f SHA-1: 8c717527a360a6fb99417645f2b4dead9fda4eb0 SHA-256: 9e3be8dd224310c82229f2a10db62314cf9382447ccb4475e8fbdac9430d6008
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wb?keyword=conscious%20leadership%20book%20pdf', which is likely intended to lead the user to malicious content. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious URL.

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.ru/wb?keyword=conscious%20leadership%20book%20pdf
    • http://files.climb-onmaps.com/uploads/1/3/1/8/131856619/liririmuxev.pdf
    • http://files.bssmfg.com/uploads/1/3/1/6/131606092/41e4882f4b3c9.pdf
    • http://files.atspeak.shop/uploads/1/3/2/6/132695986/nobuluzoxegoj.pdf
    • https://cdn.shopify.com/s/files/1/0434/3519/6566/files/62664913835.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0078/files/lejulirulumazumaxat.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/buxax.pdf
    • https://cdn.shopify.com/s/files/1/0432/9324/5590/files/jesuvob.pdf
    • https://cdn.shopify.com/s/files/1/0432/6188/6627/files/dudadajen.pdf
    • https://cdn.shopify.com/s/files/1/0437/1392/1175/files/shotga_cola_synergy.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdf
    • https://cdn.shopify.com/s/files/1/0432/4468/3432/files/fowumuwugutulikexajida.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/39247371252.pdf
    • https://cdn.shopify.com/s/files/1/0438/2621/7120/files/shankar_quantum_mechanics_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0433/2011/5358/files/vujexusiximutebopoxilenum.pdf
    • https://cdn.shopify.com/s/files/1/0435/2347/3568/files/53214454324.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/
    • https://cdn.shopify.com/s/fil

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062b7.bin
b4a3b8ec5ac239fce061a7f9120c533e511870ced207875c9cba693199cd774f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B7 5272 bytes
font_01_sfnt_off0000748a.bin
86d1adbf189c0306350c05bc60acf90d7577d7701d2196cb6ab6f84895f32cb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x748A 10380 bytes
font_02_sfnt_off00009811.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9811 4324 bytes

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