Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa0cf6fe0fb74cb…

MALICIOUS

PDF

60.0 KB Created: 2020-07-26 02:38:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c14f9ebea3475b73f7a99594f967cf73 SHA-1: e522fdb85750cf05009c1a4e54c4a11df7c98d47 SHA-256: 7aa0cf6fe0fb74cb78418eedeb3b104fd0457e0e68cfdbbb8a0b1c8fe302589e
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in Systems T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=aluminium+anodizing+process+pdf'. Additionally, it exhibits a PDF link farm heuristic, with numerous external links, including 'https://cdn.shopify.com/s/files/1/0431/5214/6586/files/tikavud.pdf'. The ML classifier also strongly flagged this PDF as malicious. These indicators suggest a social engineering attack designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=aluminium+anodizing+process+pdf
    • http://files.iluvmemore.com/uploads/1/3/2/3/132302815/ea158.pdf
    • http://files.bonihair.com/uploads/1/3/0/7/130738482/f8ce09a.pdf
    • http://files.jimcrydermanrmt.com/uploads/1/3/1/4/131438282/dediwesikexajexoz.pdf
    • http://files.dietaryapothecary.com/uploads/1/3/0/8/130873728/2694707.pdf
    • https://cdn.shopify.com/s/files/1/0431/5214/6586/files/tikavud.pdf
    • https://cdn.shopify.com/s/files/1/0431/1662/6082/files/vijuzul.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9584/files/94776887648.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8298/files/60754470318.pdf
    • https://cdn.shopify.com/s/files/1/0431/4749/3536/files/93578159580.pdf
    • https://cdn.shopify.com/s/files/1/0434/9375/2997/files/10986494060.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7020/files/27036606825.pdf
    • https://cdn.shopify.com/s/files/1/0431/7344/5792/files/xolajavumix.pdf
    • https://cdn.shopify.com/s/files/1/0427/9985/7823/files/vibuladorub.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/26304259267.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_off0000ad1f.bin
51b63e0d6c6560aabfa0411dc82d157a8521b553c6221479092bb3c21fc60ce1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD1F 5316 bytes
font_01_sfnt_off0000bf17.bin
b3a67cae42479932e3027bc54aac8f49dd5abf9b675672aaec59b440ee826759		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF17 10356 bytes

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