Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d02288197d8b095…

MALICIOUS

PDF

39.1 KB Created: 2020-09-11 06:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca3160b1dcecc375b42662a19c6c2a0a SHA-1: 54089ffca47ef1293c0784c612e52665e812b0f7 SHA-256: 1d02288197d8b0954ca35a74a4d467ce1121548d837679cf9bd7022fb5f095ff
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=anniversary+card+template+psd'. This URL is presented within the document body, disguised as a template download. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, but at least one to a potentially malicious domain. The ML classifier strongly flagged this PDF as malicious.

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.me/pify?keyword=anniversary+card+template+psd
    • http://dejem.ratemyfosterhome.com/uploads/1/3/2/8/132814930/8050847.pdf
    • http://files.ldn-hotels.com/uploads/1/3/2/7/132740951/5055644.pdf
    • https://cdn.shopify.com/s/files/1/0431/3785/9735/files/android_tab_navigation_bar_example.pdf
    • https://cdn.shopify.com/s/files/1/0463/0498/5245/files/ashanti-betekenis_in_het_Engels.pdf
    • https://cdn.shopify.com/s/files/1/0436/9275/3049/files/minecraft_game_free_pc_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0437/1179/1257/files/icloud_unlock_2019._zip.pdf
    • https://cdn.shopify.com/s/files/1/0433/4357/7246/files/packers_bengals_live_stream.pdf
    • https://cdn.shopify.com/s/files/1/0440/7905/5000/files/cambridge_english_empower_c1_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/sevujemo.pdf
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/38323200268.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_off00005b18.bin
569653c9abf69de84624fd4ca98fbf495e722ecdc25df7eb3d33509006a2cf05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B18 5372 bytes
font_01_sfnt_off00006d52.bin
5c8b46b358ffa3589b85cc8ab93b8bd6de38018c96fed9420d6bf7c38faa8158		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D52 10172 bytes

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