Malicious PDF — malware analysis report

Static analysis result for SHA-256 14416b668b1958df…

MALICIOUS

PDF

41.6 KB Created: 2020-08-02 11:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ef3ff7158636ab8d60900cab629ee9d SHA-1: f9ede594d4c46bd0e1ee53cb5cb9e259f9573572 SHA-256: 14416b668b1958dfbb1ddcacfd126fdff1b610e3e5d32f71516f7fa1f07bfef4
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified as a link farm, with one prominent URL pointing to a known malicious redirector. The document body, though partially corrupted, contains text related to 'Java programs games' and the malicious URL, suggesting a lure to a site that likely hosts further malicious content or scams. The presence of numerous external links, including those to Shopify, indicates an attempt to manipulate search engine results or distribute content through various platforms.

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=java+programs+games
    • http://files.garretteducationalconsulting.com/uploads/1/3/0/7/130740571/kiwofenut.pdf
    • http://files.cweissworks.com/uploads/1/3/0/8/130874257/7709927.pdf
    • http://files.melissa-field.com/uploads/1/3/0/8/130874379/9b24f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/9289/2053/files/monemimogeta.pdf
    • https://cdn.shopify.com/s/files/1/0432/3885/0724/files/sixijiremorakide.pdf
    • https://cdn.shopify.com/s/files/1/0437/2247/3624/files/37373086929.pdf
    • https://cdn.shopify.com/s/files/1/0431/7505/1415/files/zeguwele.pdf
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/55497717871.pdf
    • https://cdn.shopify.com/s/files/1/0428/9275/5103/files/newonikudamixolenaxur.pdf
    • https://cdn.shopify.com/s/files/1/0436/0096/9896/files/kejexem.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/7944403169.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/27852915706.pdf
    • https://cdn.shopify.com/s/files/1/0430/8759/3632/files/matlab_save_figure.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2426/files/49866388961.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_off0000656d.bin
109425ad3b8953cb6a35e9483fc5f8f89baa13daae2fab2f70aefaca09c6ee9c
pdf-font-stream PDF embedded font (sfnt) at offset 0x656D 5156 bytes
font_01_sfnt_off000076f0.bin
9f7a4bcb16e49ac82ea69c3725792795fd23a1282f35a01fd980ac38cf8f4082
pdf-font-stream PDF embedded font (sfnt) at offset 0x76F0 10308 bytes