Malicious PDF — malware analysis report

Static analysis result for SHA-256 2465f6e255e29767…

MALICIOUS

PDF

47.0 KB Created: 2020-08-19 13:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb6d86961407e3528a868b7bcf9befb0 SHA-1: e341beec04cc47cc18b745acfd1b95463c443627 SHA-256: 2465f6e255e29767014cf7180dae8979330cd455a22c776c2e0d3849c5d1219e
128 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a download lure ('Vidmate apple free') and the presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports this. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.
  • 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
  • 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.ru/pify?keyword=vidmate+apple+free
    • http://files.olneyfarmersmarket.com/uploads/1/3/0/9/130969192/bisadawijobosez-totat-kudinusanem.pdf
    • https://cdn.shopify.com/s/files/1/0428/0716/5095/files/zuzakofedopubivabokiriwi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6263/1326/files/87089672360.pdf
    • https://cdn.shopify.com/s/files/1/0432/6768/6558/files/kemokebu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1100/4821/files/pegina.pdf
    • https://cdn.shopify.com/s/files/1/0430/9182/0711/files/financial_accounting_information_for_decisions.pdf
    • https://cdn.shopify.com/s/files/1/0436/3180/4574/files/easter_event_osrs.pdf
    • https://cdn.shopify.com/s/files/1/0436/4160/2208/files/86641507622.pdf
    • https://cdn.shopify.com/s/files/1/0436/4907/3312/files/73573878146.pdf
    • https://cdn.shopify.com/s/files/1/0436/5352/9753/files/pantera_cowboys_from_hell_tab.pdf
    • https://cdn.shopify.com/s/files/1/0437/3810/3962/files/water_and_waste_management_system.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006536.bin
41d978d974e0cf7fec29b4be8ea13115617e468da2f48a15a88fd1b09b63634a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6536 4972 bytes
font_01_sfnt_off0000760d.bin
c56900d819b19bca113e1f027119f3e0177bc8e2064fa65236697551bafb9610		 pdf-font-stream PDF embedded font (sfnt) at offset 0x760D 10248 bytes
font_02_sfnt_off0000993c.bin
4bf7462e787791ee30cced4e4a0065977ba460b587ec5e4d0bf31a1282398818		 pdf-font-stream PDF embedded font (sfnt) at offset 0x993C 16416 bytes

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