Malicious PDF — malware analysis report

Static analysis result for SHA-256 74463e3d59b00458…

MALICIOUS

PDF

36.7 KB Created: 2020-08-07 06:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3e722a8677b1faffcea77bbdd174f7f SHA-1: 0ce7ab98c6c0647cf658ef7f26905f2e68a2f336 SHA-256: 74463e3d59b0045820f6483bf5be2fcb2db706b7dda7f56ad3cd6e587332fff3
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a "scratch shooting game tutorial PDF". The presence of many external PDF links suggests a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or redirection attempt.

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=scratch+shooting+game+tutorial+pdf
    • http://files.carmineruddy.com/uploads/1/3/2/6/132683154/kevapozadupuxe.pdf
    • http://files.annaweaverbooks.com/uploads/1/3/2/6/132696063/7899390.pdf
    • http://files.raiseyourvibration.yoga/uploads/1/3/2/6/132696015/dajizudas-xopariwi-zipabigoro.pdf
    • http://files.carolenglishgarner.com/uploads/1/3/2/7/132710627/fusolokofesanofo.pdf
    • http://files.rosanaourens.com/uploads/1/3/2/7/132740193/e133bb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35679391278.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/64989875230.pdf
    • https://cdn.shopify.com/s/files/1/0434/2824/9767/files/electrical_engineering_nptel_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0435/4624/7332/files/guwamutusi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/kiriwejokug.pdf
    • https://cdn.shopify.com/s/files/1/0432/5025/3979/files/gahlran_s_right_hand.pdf
    • https://cdn.shopify.com/s/files/1/0437/5022/8119/files/38426431001.pdf
    • https://cdn.shopify.com/s/files/1/0440/7400/8741/files/how_to_create_a_file.pdf
    • https://cdn.shopify.com/s/files/1/0433/3151/8622/files/9814634088.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.pdf
    • https://cdn.shopify.com/s/files/1/0433/3935/0181/files/gumodubutezuliji.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_off00004bcd.bin
f056b48b0aa79c47e0339b72590b7698d96471baed7dd1dbd67e4b212d6a70b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4BCD 5672 bytes
font_01_sfnt_off00005ef0.bin
eec680e7fd4b38c1a94e2f35b39b30bd5843f1fe09118a7c583a2482ed352953		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF0 12168 bytes

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