Malicious PDF — malware analysis report

Static analysis result for SHA-256 65483cce0f899547…

MALICIOUS

PDF

40.6 KB Created: 2020-08-14 22:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e03ac33e3d7755ac88dcdce138e2d710 SHA-1: a53388860b3ffc4c6c121650459deb9c3fecf541 SHA-256: 65483cce0f89954789fe4008ec22e9d918d77d7e2c9f51f014165a0b6b8b9e10
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=flight+simulator+x+addon', suggesting a phishing or scam lure. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs pointing to various domains, some of which are hosted on suspicious file-sharing sites.

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=flight+simulator+x+addon
    • http://files.nphsjrwolfpack.com/uploads/1/3/1/4/131483253/pageponiputi_gosalobire_vopepas_fatibo.pdf
    • http://files.oregonfmc.org/uploads/1/3/1/6/131607029/7c3d19b7dda7d45.pdf
    • http://files.vbstlh.com/uploads/1/3/1/8/131856394/joriduzamowum-nexebopil.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7089/7824/files/wigob.pdf
    • https://cdn.shopify.com/s/files/1/0435/4765/6343/files/analytical_geometry_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/nw-_31253-_4.pdf
    • https://cdn.shopify.com/s/files/1/0432/2118/8763/files/while_loop_javascript.pdf
    • https://cdn.shopify.com/s/files/1/0431/1708/4833/files/jejibupipajagomuf.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/tejarozotabifajojor.pdf
    • https://cdn.shopify.com/s/files/1/0436/9963/4328/files/87938513206.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/kigenijivad.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/betapuvutuguwiwobe.pdf
    • https://cdn.shopify.com/s/files/1/0430/9801/3845/files/management_of_aphthous_ulcers.pdf
    • https://cdn.shopify.com/s/files/1/0432/1070/3012/files/70348499959.pdf
    • https://cdn.shopify.com/s/files/1/0427/9782/6207/files/fumimije.pdf
    • https://cdn.shopify.com/s/files/1/0433/0579/5752/files/71784076502.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_off000060d9.bin
7b24f0588fe0ecb7a158a7afb6d4c60d95329c3d536900b24c6c1c3a62edcde7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D9 5260 bytes
font_01_sfnt_off0000729b.bin
57ef2e33ff2ff22aa0624a2c6f9856d810c595b4820612b3938a4c62476614d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x729B 10284 bytes

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