Malicious PDF — malware analysis report

Static analysis result for SHA-256 a95f9211e6380f55…

MALICIOUS

PDF

46.9 KB Created: 2020-08-21 19:57:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78e191b9712d686bd739ceec09d040c3 SHA-1: fdb6c526b0ba6386f011924275c496befe0a8fd8 SHA-256: a95f9211e6380f55b2ffbc0ff99e4c7b98f14948fb353570e1010d4b3cbf75a8
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=apprendre+l%2527+anglais+grammaire+pdf', suggesting a lure to a phishing or malware distribution site. The presence of numerous links to PDFs hosted on Shopify indicates a potential SEO poisoning or link farm strategy to distribute malicious content.

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=apprendre+l%2527+anglais+grammaire+pdf
    • http://files.tainjio.com/uploads/1/3/0/7/130776641/jubodalo_teruga_sugetowuganudab_ropenid.pdf
    • http://files.nextstepsglobal.org/uploads/1/3/1/0/131070895/d4c1de7cb7439.pdf
    • https://cdn.shopify.com/s/files/1/0431/1370/9722/files/sosialisasi_budaya_organisasi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6076/3555/files/41307282120.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/denakevomulon.pdf
    • https://cdn.shopify.com/s/files/1/0433/0350/1989/files/6546880558.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/stop_ssh-_agent.pdf
    • https://cdn.shopify.com/s/files/1/0430/6088/7705/files/16261170985.pdf
    • https://cdn.shopify.com/s/files/1/0431/3304/2839/files/white_background_powerpoint_templates_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/3331/1904/files/jezefoviliwin.pdf
    • https://cdn.shopify.com/s/files/1/0438/6911/0432/files/bsc_agriculture_online_form_2018_maharashtra.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_off000065bc.bin
8522561e56dc4aa1e24d7f8194443676aac5772b18dc1a4e09752b78bde05f58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65BC 6504 bytes
font_01_sfnt_off000075f2.bin
3b4b34294841b88989b88679bfaf45a93d78a272611906b2693e910044b4c71b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F2 5384 bytes
font_02_sfnt_off0000882f.bin
651706af7e5d275d0ff28c2e5dba8583219f4fef012f5edb3d69d00d0be00d91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x882F 11868 bytes

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