Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b6faecabe13924…

MALICIOUS

PDF

43.7 KB Created: 2020-08-19 21:33:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d363f8e117fd8c29839be1d9255e4167 SHA-1: bb6cfc5697198209b12b7d71eee25bd8e72275ec SHA-256: 60b6faecabe139249c52f06da9fbdd12074071116baa9861502441dd1ad5f37d
162 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 (ttraff.com) with a keyword suggesting a lure. The ML classifier strongly flagged this PDF as malicious. The presence of embedded links and the redirector indicate an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=3d+painter+free
    • http://bemef.benttreeocala.com/uploads/1/3/0/8/130874676/4b78018681f.pdf
    • http://bokex.acedassistance.com/uploads/1/3/1/0/131070420/sokilomudopexer_rinoxokuku_lokobo_juribubajoki.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1664/2975/files/jabaxikokas.pdf
    • https://cdn.shopify.com/s/files/1/0433/3459/8809/files/pdf_to_autocad_drawing_converter_free_software_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5311/2735/files/63541796842.pdf
    • https://cdn.shopify.com/s/files/1/0452/8416/3746/files/bukhari_sharif_jild_1.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0954/files/guvitujenitevamenulateti.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/3dplm_aptitude_questions_2016.pdf
    • https://cdn.shopify.com/s/files/1/0432/4153/7696/files/26516478442.pdf
    • https://cdn.shopify.com/s/files/1/0438/4056/9494/files/fowediwipowir.pdf
    • https://cdn.shopify.com/s/files/1/0431/6214/0840/files/lejisabi.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/codominance_and_multiple_alleles_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/9178/6918/files/46821037343.pdf
    • https://cdn.shopify.com/s/files/1/0430/4797/7114/files/double_digit_multiplication_worksheets_with_grids.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e74.bin
f0e0b9da3e4567c3a74a6a5e8690c1fa8b1d924d7965f83844fedfb50f28199d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E74 4892 bytes
font_01_sfnt_off00007f20.bin
acfedd3dbfcd3737d3976e6be7db2dc4e6e339fc995aab93cfdd4bff6a505eec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F20 10264 bytes

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