Malicious PDF — malware analysis report

Static analysis result for SHA-256 16ce1124e472347c…

MALICIOUS

PDF

47.3 KB Created: 2020-08-03 14:08:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff186a30ea8fd9fbecf8e4b65eff9cc9 SHA-1: 9aa9fdaf39b5c9ff14db64c2c12b36fc3ef1cac7 SHA-256: 16ce1124e472347c7cc80bc1b74cf8ec73afa725daf95d25d04551ea43cdcdb9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is classified as malicious due to its function as a link farm, directing users to numerous external PDF files. The primary malicious URL, 'https://ttraff.ru/pify?keyword=centella+asiatica+medicinal+uses+pdf', is identified as a redirector, likely leading to further malicious content. The document's structure and embedded links suggest an attempt to manipulate search engine results or distribute spam content, masquerading as legitimate information.

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/pify?keyword=centella+asiatica+medicinal+uses+pdf
    • http://files.tyjministries.com/uploads/1/3/1/3/131398154/funutopafelupujepi.pdf
    • http://files.barrycolonfitnessrus.org/uploads/1/3/1/0/131070366/tukokuf_nilix_wiviwe_lufejite.pdf
    • http://files.microbeautybykaylen.com/uploads/1/3/2/7/132710779/luwajurob.pdf
    • http://files.deannabaldi.com/uploads/1/3/2/6/132695679/risalajadinobon.pdf
    • http://files.machenenterprises.com/uploads/1/3/1/0/131070362/7083326df79a9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/taviwapo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4742/6965/files/pawokofaxufarazebo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/zetudelugorupabukajareri.pdf
    • https://cdn.shopify.com/s/files/1/0436/9999/4789/files/srimatudu_movie_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/0333/1231/files/megojaxiredaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/21533622499.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/72215294880.pdf
    • https://cdn.shopify.com/s/files/1/0433/7932/7141/files/figabezuvegavajuxevupuv.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/62386903812.pdf
    • https://cdn.shopify.com/s/files/1/0437/8948/4190/files/57886033828.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5552762143.pdf
    • https://cdn.shopify.com/s/files/1/0437/8879/6053/files/gumidogigez.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_off00007c65.bin
644a35659576687f2e27d2092d1cc214158f4d0d0ba5daaf3927523f64cb3e10		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C65 5108 bytes
font_01_sfnt_off00008db6.bin
34f3e36736f37a70a0eb76bdb885c7cb75df33b3c4f7417be1ba2e074d775b05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB6 9908 bytes

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