Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb139b5fa9ca20f9…

MALICIOUS

PDF

48.2 KB Created: 2020-08-11 17:22:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e594e84033d4d0662496c6a27184caaf SHA-1: e7048f919d4ecd8b3c241a5d9f2c854194d5f7b8 SHA-256: eb139b5fa9ca20f92e3ff5e6b4ca504d84ec73babea0a5433e0e188ce9308506
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL, https://ttraff.cc/pify?keyword=chagas+diagnostico+y+tratamiento+pdf, is designed to redirect users to potentially harmful content. The ML classifier also strongly indicated maliciousness.

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=chagas+diagnostico+y+tratamiento+pdf
    • http://files.happyphoneunlocking.com/uploads/1/3/0/8/130874067/lesato.pdf
    • http://files.ashleyelainecooper.com/uploads/1/3/1/4/131437636/6651710.pdf
    • http://files.socialflash.com.au/uploads/1/3/1/1/131164081/7d4515.pdf
    • http://files.rockykramer.com/uploads/1/3/0/7/130776298/rubogewadim.pdf
    • http://files.tinsley-chiropractic.com/uploads/1/3/0/7/130738614/670539.pdf
    • https://cdn.shopify.com/s/files/1/0440/7492/6230/files/business_administration_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.pdf
    • https://cdn.shopify.com/s/files/1/0435/5152/2977/files/mosaicos_colorea_por_numeros_editorial_gali.pdf
    • https://cdn.shopify.com/s/files/1/0436/8482/3205/files/fotid.pdf
    • https://cdn.shopify.com/s/files/1/0432/2007/4657/files/40028982988.pdf
    • https://cdn.shopify.com/s/files/1/0433/8515/9843/files/45620299910.pdf
    • https://cdn.shopify.com/s/files/1/0438/3545/7696/files/tafigimoda.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3212/files/principios_da_administrao_cientifica_taylor.pdf
    • https://cdn.shopify.com/s/files/1/0436/9874/9608/files/javascript_ajax_response.pdf
    • https://cdn.shopify.com/s/files/1/0438/8726/3899/files/wetibawujelezep.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/financial_accounting_for_undergraduates_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0452/3058/8064/files/advertising_campaign_example.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_off000064e1.bin
7111f0fd595ad90457e591441800254aebb9992cd521c7ae61c8565900d2c9c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64E1 5544 bytes
font_01_sfnt_off00007798.bin
ff8b3f79542fc44b18650df0b9be0499a597e1f078c0c10984b0aaee7bb965e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7798 11388 bytes
font_02_sfnt_off00009be5.bin
42039e660cd6fa852c80f86e0477e1527f4b4356d0806b35c1044914cf260aa3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9BE5 16404 bytes

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