Malicious PDF — malware analysis report

Static analysis result for SHA-256 05e1229f16829ee8…

MALICIOUS

PDF

43.0 KB Created: 2020-08-12 19:24:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e64059471965fbd2bece92f84336cc34 SHA-1: c4f56400dc576c37e6009b1837ae295f1fc0876a SHA-256: 05e1229f16829ee81c72dc5409bbf7bdc1545701c2845a624e181f6c43e6ee76
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though obfuscated, contains text suggesting it is a lure for a manual, which is then linked to a malicious URL. The presence of embedded URLs and the ML classifier output strongly suggest malicious intent, likely to redirect users to a phishing or malware download site.

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=2020+honda+africa+twin+owners+manual+pdf
    • http://dogavuga.press1magazine.com/uploads/1/3/1/0/131070581/migazu-jorezog-nawejogetadaf-lusadobix.pdf
    • http://files.addiedraper.com/uploads/1/3/1/3/131379382/dudenifejaku.pdf
    • http://files.frenchtoowoomba.com/uploads/1/3/2/6/132681308/fopovulatimetopun.pdf
    • http://pinebabiz.pechtercriminaldefense.com/uploads/1/3/0/8/130874431/7387718.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/5149/9170/files/fizeduzotosojonevej.pdf
    • https://cdn.shopify.com/s/files/1/0434/6835/7796/files/linked_lists_c.pdf
    • https://cdn.shopify.com/s/files/1/0434/9437/5576/files/jitixuxob.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/bigokelilokaxokuxefibeka.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/35820250442.pdf
    • https://cdn.shopify.com/s/files/1/0431/8828/9694/files/jaxuvedif.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/36524805082.pdf
    • https://cdn.shopify.com/s/files/1/0433/5858/4986/files/kokaxubizaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6464/7077/files/47656512252.pdf
    • https://cdn.shopify.com/s/files/1/0433/9492/4700/files/zutuna.pdf
    • https://cdn.shopify.com/s/files/1/0433/4921/3349/files/suxekofun.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lapifobojupe.pdf
    • https://cdn.shopify.com/s/files/1/0437/7572/1633/files/pupalakikosezupi.pdf
    • https://cdn.shopify.com/s/files/1/0432/2603/8433/files/the_american_democracy_11th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/1751/7731/files/banco_central_de_nicaragua_tipo_de_cambio.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_off000060a7.bin
1d9077d0c804a01efc9676469aa11e3ddb70c9fd1b5bb7f7012bc739b1e5c6d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60A7 5668 bytes
font_01_sfnt_off000073c9.bin
aa52611220676ad674eb66b95590b04ddb90ebaa938abd9405f52a8fbfa04411		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C9 13000 bytes

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