Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0dda92961676394…

MALICIOUS

PDF

47.8 KB Created: 2020-07-24 05:11:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e3239160cf4e925e003181d8fd96747e SHA-1: 0dc47d76615fc88ca92319afda2ce8da349597ee SHA-256: b0dda929616763943b5bca45976d60368e2ee9e66df1ab19e2bad340d3b557ad
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to a known malicious domain, ttraff.com, with a query parameter suggesting a lure related to 'equipment damage incident report sample'. The PDF also contains a large number of embedded links, many pointing to shopify.com, which is identified as a link farm. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be social engineering via a deceptive link within the document.

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=equipment+damage+incident+report+sample
    • http://files.sparker82.com/uploads/1/3/1/4/131483343/2803877.pdf
    • http://files.manillashowsociety.net/uploads/1/3/1/1/131163684/5709582.pdf
    • http://files.airconditioningcambridge.co.uk/uploads/1/3/2/7/132712326/taxulawawelodi.pdf
    • http://files.blaine-bacchiocchi.com/uploads/1/3/2/6/132696263/3028133.pdf
    • http://files.charmvilla.com/uploads/1/3/1/6/131606121/7403716.pdf
    • http://files.blaine-bacchiocchi.com/uploads/1/3/2/6
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/kazumove.pdf
    • https://cdn.shopify.com/s/files/1/0429/6425/4883/files/36050181877.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58014629257.pdf
    • https://cdn.shopify.com/s/files/1/0433/2306/4488/files/pibupidexeliporuwoxi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1674/1286/files/lusom.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/63322726495.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/busoxodegadomegaro.pdf
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/75659890650.pdf
    • https://cdn.shopify.com/s/files/1/0431/8789/6480/files/69614771031.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77439678162.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/9337392514.pdf
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/5005798437.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007d8a.bin
387e31a78a616e4c8f7209648aa82bc20c948f7ad901a4c4a006f137e22e9552		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8A 5356 bytes
font_01_sfnt_off00008f9a.bin
4646dd88617bd8245d1eaf041e4c8eda58393daadd133f9c68939bf3a3b400da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F9A 10052 bytes

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