Malicious PDF — malware analysis report

Static analysis result for SHA-256 90d70e34a95efaa2…

MALICIOUS

PDF

62.4 KB Created: 2020-08-02 04:05:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e16b0a954ccccf261f0ea6196f411f6 SHA-1: 5e6d1c96de1f21d9bef8b1dd66f33224ec7c7cac SHA-256: 90d70e34a95efaa2a8dec20cb96385197c5383dd8c9a93fb78b90c428f112da6
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link to a known malicious redirector, traff.com, which is likely intended to lead the user to a malicious site. The document body, though heavily obfuscated, contains the string 'T. i. paperwork' and the malicious URL, suggesting a lure to trick the user into clicking the link. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm SEO tactic to obscure the true malicious destination.

Heuristics 3

  • 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.
  • 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=t.+i.+paperwork
    • http://files.aquabellylakelanier.com/uploads/1/3/0/8/130873872/dodepidarub_gisupadoti.pdf
    • http://files.la-fll.org/uploads/1/3/1/0/131070313/2597918.pdf
    • http://files.lrbred.com/uploads/1/3/2/7/132740270/sizur_kopawubo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8201/4108/files/25539619174.pdf
    • https://cdn.shopify.com/s/files/1/0428/3292/0732/files/83979009885.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/jijebiwufofaximov.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdf
    • https://cdn.shopify.com/s/files/1/0430/5305/6149/files/51201786666.pdf
    • https://cdn.shopify.com/s/files/1/0435/8373/3915/files/93262194623.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5279/files/weruxejolafil.pdf
    • https://cdn.shopify.com/s/files/1/0431/7328/1948/files/45475791349.pdf
    • https://cdn.shopify.com/s/files/1/0429/9092/8026/files/wenebikopixoxikowopuve.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/xirodawupitirifovefexu.pdf
    • https://cdn.shopify.com/s/files/1/0429/6353/3977/files/suvifixaja.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/48694364665.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_off0000b68e.bin
61f3a74e182217483e73d05d881fab03fe0a699a2a73c75a14b5d03f2d7a2757		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB68E 4740 bytes
font_01_sfnt_off0000c6d9.bin
7d64446e15632f889b68eed1eecd18b4b666d9e99fa266ff9d3fcd98d3a32268		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D9 11100 bytes

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