Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2fb9bcd31bb0ebc…

MALICIOUS

PDF

50.0 KB Created: 2020-08-02 07:02:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c6db91e6254d70a56ab7b75475969b25 SHA-1: 15588430ed662887fb99cc773a55bfcd21a92489 SHA-256: b2fb9bcd31bb0ebce60c381cfad45be51941538c4a47f080d6117b987a654a85
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file contains numerous links, including a critical redirector link to 'ttraff.com'. The document body suggests a lure for a 'Wordpress private page', likely intended to trick users into clicking the malicious link. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a phishing or redirection attack. No scripts were extracted, but the embedded links are sufficient to indicate malicious intent.

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=wordpress+private+page
    • http://files.gregorysanders.com/uploads/1/3/2/3/132302819/nasitozezeda.pdf
    • http://files.pipandwillys.com/uploads/1/3/0/7/130739510/kowoxilavipukuz_zafetezuvutojew_sojalamadovitax_kuposu.pdf
    • http://files.anniepercussion.com/uploads/1/3/2/7/132740321/disatibe.pdf
    • http://files.thehomegirltherapist.com/uploads/1/3/1/4/131482941/zekefoso-pevakukoxu-tuketuzuwaboxeg.pdf
    • http://files.mountainmanperformance.com/uploads/1/3/0/7/130740323/2497085.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/11067845032.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/93681431196.pdf
    • https://cdn.shopify.com/s/files/1/0432/7591/1321/files/xukisikuburabis.pdf
    • https://cdn.shopify.com/s/files/1/0429/2853/7753/files/62254484663.pdf
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/97650418610.pdf
    • https://cdn.shopify.com/s/files/1/0432/7633/7318/files/takebozojujatubuxune.pdf
    • https://cdn.shopify.com/s/files/1/0432/4468/3419/files/22144091878.pdf
    • https://cdn.shopify.com/s/files/1/0434/9673/4885/files/7339874404.pdf
    • https://cdn.shopify.com/s/files/1/0432/7004/5864/files/pusudefalorekaj.pdf
    • https://cdn.shopify.com/s/files/1/0429/4151/3894/files/75336270699.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/36593044277.pdf
    • https://cdn.shopify.com/s/files/1/0435/3864/5144/files/67316179244.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c42.bin
ef97546c2117e635bb9e5fca80271d3920be65e3b4f60fb3f4bc828c4ff53736		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C42 5168 bytes
font_01_sfnt_off00008df2.bin
e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF2 1800 bytes
font_02_sfnt_off00009680.bin
6c94977f9b735a731e28321c7ca7bcf49edc741bf39236e74cc679ee2ca1d13e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9680 10704 bytes

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