Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fb8f41923140278…

MALICIOUS

PDF

44.7 KB Created: 2020-08-16 23:44:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18a924ad01c6eaa02148e86501172340 SHA-1: 5f0d42c3ae24fb323c6a199295853990c9afb40c SHA-256: 7fb8f419231402789f2f84b7923e090e4f50b95e73e3d68b4df69b84e1c69061
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains a link farm and a redirector to malicious infrastructure, disguised as a manual. The primary URL, https://ttraff.com/pify?keyword=amphony+wireless+speaker+kit+manual, is a known malicious redirector. The document's structure and embedded links suggest an attempt to drive traffic to potentially harmful content, likely for phishing or malware distribution.

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=amphony+wireless+speaker+kit+manual
    • http://files.colordesignstudio.com/uploads/1/3/1/6/131606533/lejemo.pdf
    • http://files.harwintoncongucc.org/uploads/1/3/1/3/131398221/400ee7.pdf
    • http://files.geyserlandcatclub.co.nz/uploads/1/3/1/6/131606256/3453861.pdf
    • http://files.vonderhauswulfgermanshepherd.com/uploads/1/3/0/8/130813797/fivepeno.pdf
    • http://files.amidalifecoaching.com/uploads/1/3/0/8/130813042/2469439.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/19127325506.pdf
    • https://cdn.shopify.com/s/files/1/0440/4363/2805/files/axelos_itil_4_foundation.pdf
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/compendio_catecismo_da_igreja_catlica.pdf
    • https://cdn.shopify.com/s/files/1/0431/8412/8151/files/dejewofojarotemonuxinuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/0228/1633/files/ruwizatalerebarazof.pdf
    • https://cdn.shopify.com/s/files/1/0439/2586/4603/files/382620634.pdf
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/60172117891.pdf
    • https://cdn.shopify.com/s/files/1/0433/1785/4373/files/93920313691.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/xolikubapowov.pdf
    • https://cdn.shopify.com/s/files/1/0431/3258/4098/files/matedelezowijemixuxon.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/sisixiletuvimutopo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1574/0312/files/ahle_hadees_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/8003/2160/files/73263059358.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_off00006a99.bin
bb342b00c717025335fe6c81e2d731cc6f186ab421a3178703ea46b10d723946		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A99 5308 bytes
font_01_sfnt_off00007c8e.bin
6bf1660dd54dbdc3a710ea39d24fb76d6fc88986f2124ac79125ebc6a70cc457		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8E 12732 bytes

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