Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbf140cfc810eac2…

MALICIOUS

PDF

51.4 KB Created: 2020-08-08 04:43:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 772197e0009e18ab5718888eee24dca0 SHA-1: 2877f01ab508c4da9ec7e87ab01394c834513e39 SHA-256: dbf140cfc810eac261d1c1347416cf6fc9d4c86ecade07c945ebf09dadda6fa2
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as legitimate documents, but the primary link redirects to a known malicious URL. The document body, though heavily obfuscated, contains the target URL, suggesting a lure to trick users into clicking the malicious link. The heuristic firings confirm the presence of malicious redirector links and a link farm.

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.cc/pify?keyword=certificado+antecedentes+procuraduria+pdf
    • http://files.urbanshared.com/uploads/1/3/0/7/130776602/luzemetuwovu-zudiboli-tikoriz-kenabipesaje.pdf
    • http://files.srwcmilwaukee.com/uploads/1/3/1/0/131070866/rijidogimafire_vepipil_gabipovi.pdf
    • http://files.roguevalleycavaliers.com/uploads/1/3/1/3/131398129/8561915.pdf
    • https://cdn.shopify.com/s/files/1/0430/7845/1351/files/modern_automotive_technology_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/xitavareva.pdf
    • https://cdn.shopify.com/s/files/1/0428/6549/2127/files/calidad_total.pdf
    • https://cdn.shopify.com/s/files/1/0427/4749/4567/files/bootstrap_flyout_menu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53940500656.pdf
    • https://cdn.shopify.com/s/files/1/0430/8297/3346/files/78245452930.pdf
    • https://cdn.shopify.com/s/files/1/0430/7612/4821/files/5354279653.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/buxidumex.pdf
    • https://cdn.shopify.com/s/files/1/0432/7381/4182/files/pimatup.pdf
    • https://cdn.shopify.com/s/files/1/0436/0319/8114/files/31737379279.pdf
    • https://cdn.shopify.com/s/files/1/0437/3259/8938/files/cbse_sample_paper_2020_class_12_physics.pdf
    • https://cdn.shopify.com/s/files/1/0437/7329/6801/files/lozidifemum.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_off00007984.bin
127b44c9f93874c96d25eb7ddc4688780d8877ce931cf296363fb5748d8d514b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7984 6744 bytes
font_01_sfnt_off00008a6b.bin
e2331dabc5f66b6727254f782fc47d40d15a9988a016385e2dacf586a4a5d5c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A6B 5024 bytes
font_02_sfnt_off00009b8d.bin
52c3dedd95a1196a653993d7cac8d012ddbf9e32d5af540535c59b095445455f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B8D 10692 bytes

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