Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fba398af6d003f7…

MALICIOUS

PDF

41.9 KB Created: 2020-08-04 01:17:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e71990081de2ef8104284d04bb88e5f8 SHA-1: 3df902eed74be237e8b12bb63bd1afcc639acd05 SHA-256: 5fba398af6d003f721a04d14d6ecf7e0527de138f5fb1de60a4f526b6859f992
154 Risk Score

Malware Insights

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

This PDF document is designed to appear as a "Mergers and acquisition pdf" to trick users into clicking malicious links. It contains a large number of embedded links, with one pointing to a known malicious redirector infrastructure. The document also leverages embedded JavaScript, likely to facilitate the redirection or further malicious actions.

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=mergers+and+acquisition+pdf
    • http://files.newlife.ca/uploads/1/3/1/4/131438541/a65d4f5034f.pdf
    • http://files.eatatheritage.co.uk/uploads/1/3/1/4/131438079/jazibokewekevapo.pdf
    • http://files.stcm.org.uk/uploads/1/3/2/6/132681885/janororagod-dizofukomator-lipesanib-jukulofejuz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6862/8892/files/ruwijonix.pdf
    • https://cdn.shopify.com/s/files/1/0432/2318/7614/files/2152532009.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6469/files/catch_me_if_you_can_book.pdf
    • https://cdn.shopify.com/s/files/1/0435/6240/1947/files/jexotefusotisazorijivo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9695/7343/files/54836014546.pdf
    • https://cdn.shopify.com/s/files/1/0428/8095/8617/files/51841058490.pdf
    • https://cdn.shopify.com/s/files/1/0430/9529/4101/files/60344694578.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/82790311502.pdf
    • https://cdn.shopify.com/s/files/1/0433/9181/1734/files/physics_book_for_bsc_part_1_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0431/2881/5783/files/best_entrepreneur_books.pdf
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/convert_mkv_to_mp3.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4703/files/pizazubenanuwezira.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_off000064d3.bin
609b502c585b8104a5da68b2e6ab2a677abd3109da74b9ad04b7e10f7eb792d6
pdf-font-stream PDF embedded font (sfnt) at offset 0x64D3 5420 bytes
font_01_sfnt_off0000775a.bin
df662a55c20274107205adf472f1e64fa9025958f32b3888967879e307ff69b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x775A 10460 bytes