Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b27d88dc380f471…

MALICIOUS

PDF

50.5 KB Created: 2020-08-19 08:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5ba189f52b8b6638ff369e052a36b8e SHA-1: acc4205c88084f1a774e36a49885419246e1d6c3 SHA-256: 7b27d88dc380f471e6833fb4015486fc617aa54164f3bdbc8915f4f832579b9a
154 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at "https://ttraff.ru/pify?keyword=swing+trading+plan+template". The document body, though heavily obfuscated, contains references to trading plans and URLs, suggesting a lure to external content. The presence of many PDF links indicates a link farm, likely for SEO manipulation or to host further malicious content.

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.ru/pify?keyword=swing+trading+plan+template
    • http://files.julianbullmagic.com/uploads/1/3/2/6/132681772/nebizajowubajuz.pdf
    • http://files.madhatterrestaurantandbakery.com/uploads/1/3/2/7/132740352/wurozeguso_kelebivu_dusesozubewebo.pdf
    • http://files.rtlbcluster7.com/uploads/1/3/0/8/130813783/c683b6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/6302/5557/files/12589747350.pdf
    • https://cdn.shopify.com/s/files/1/0434/8664/2338/files/mefadewinibivuxidufi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3621/files/public_administration_books_philippines.pdf
    • https://cdn.shopify.com/s/files/1/0431/6577/8080/files/abramelin_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/4357/7246/files/commercial_sublease_agreement_template_uk.pdf
    • https://cdn.shopify.com/s/files/1/0435/0682/7428/files/rajovedizixi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8172/8151/files/8765590799.pdf
    • https://cdn.shopify.com/s/files/1/0446/0707/8564/files/9033044494.pdf
    • https://cdn.shopify.com/s/files/1/0438/1851/6637/files/como_pasar_de_a_word_sin_programas.pdf
    • https://cdn.shopify.com/s/files/1/0430/2041/9226/files/vevodotelawexosibeniduje.pdf
    • https://cdn.shopify.com/s/files/1/0430/0292/1111/files/89795815164.pdf
    • https://cdn.shopify.com/s/files/1/0429/0193/0143/files/presentation_of_data.pdf
    • https://cdn.shopify.com/s/files/1/0433/9387/6118/files/15059570726.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070fc.bin
1d3e8e34dfd0db0df2a49008506801368c9a7f53af9b4f2a800db6361aabed38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70FC 5296 bytes
font_01_sfnt_off000082f1.bin
94700dfac303da90b405ae18e9b2424afd958d849c7e079407f622e7959f8d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82F1 10984 bytes
font_02_sfnt_off0000a7ee.bin
7f9b1fb8a8b41701d1fd957b8fd3e2511174cba5b183b196b7055724272813eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7EE 16172 bytes

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