Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3881586ae2bd36…

MALICIOUS

PDF

39.9 KB Created: 2020-08-10 15:27:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98a8445a6cf8f007e825cf71a1ba9fa7 SHA-1: 6a3724b7345070ac0f666c9ef68882d0c1897501 SHA-256: ee3881586ae2bd3602ceccf053d65993fd21581f574d14e817f55c7dfce64359
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains French text related to joining PDF files online, likely a lure. The presence of a malicious redirector suggests an attempt to lead the user to a malicious site or download further malware.

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=joindre+des+fichiers+pdf+en+ligne
    • http://files.cozycamperrentals.com/uploads/1/3/1/8/131860645/2935575.pdf
    • http://nadal.constitutionnext.com/uploads/1/3/0/9/130969059/51d0d1.pdf
    • http://miresadof.goldareaaglow.org/uploads/1/3/1/1/131164250/8e8c26ac2f2.pdf
    • https://cdn.shopify.com/s/files/1/0434/7379/7285/files/poguzazenodusetekoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/tovipikib.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/pifivajumokesepali.pdf
    • https://cdn.shopify.com/s/files/1/0432/9511/3374/files/gexabiduzabeburajumodonon.pdf
    • https://cdn.shopify.com/s/files/1/0449/1057/5771/files/holy_and_anointed_one_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/39075587866.pdf
    • https://cdn.shopify.com/s/files/1/0433/7047/9768/files/95527982097.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84113106953.pdf
    • https://cdn.shopify.com/s/files/1/0437/1336/4121/files/us_history_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/0298/5626/files/livro_fundamentos_da_genetica.pdf
    • https://cdn.shopify.com/s/files/1/0437/2417/7557/files/fupatagiresunarakifeti.pdf
    • https://cdn.shopify.com/s/files/1/0433/1077/6478/files/zifebafezetu.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_off00005c00.bin
f945deff62eb4e9e0fd82c00c61ad39dec485b458359067c76030a3247d5001e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C00 5196 bytes
font_01_sfnt_off00006da5.bin
be6f13a9d29918e497f7c2bff3ab5fdb417ae2b1e2e96d2a4deb8e1bbcba5ece		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA5 11112 bytes

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