Malicious PDF — malware analysis report

Static analysis result for SHA-256 b506cbf1e79671ff…

MALICIOUS

PDF

45.5 KB Created: 2020-08-10 06:03:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9c9b503d751a20126f921c262d93afea SHA-1: ee45e21e54c82263717737596fe6ddcf01c4b876 SHA-256: b506cbf1e79671ff474c2bc6af80ee7c93185987e0e7fd037328cf1cdea1f24c
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a 'Pan card application for partnership firm form download pdf'. This link, 'https://ttraff.com/pify?keyword=pan+card+application+for+partnership+firm+form+download+pdf', likely leads to a phishing or malware download site. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains, suggesting an attempt to manipulate search engine results or distribute content widely. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=pan+card+application+for+partnership+firm+form+download+pdf
    • http://files.normanmuseum.org/uploads/1/3/1/4/131482919/tiketedujomoganosuz.pdf
    • http://nokon.renuent.com/uploads/1/3/2/6/132680813/debodedumug.pdf
    • http://files.careerconstructionnetwork.org/uploads/1/3/1/3/131380564/vumexunutifojez.pdf
    • http://ludame.hauntedmichigan.net/uploads/1/3/0/7/130738970/1d7f33.pdf
    • http://ludame.hauntedmichigan.net/uploads/1
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/31497941009.pdf
    • https://cdn.shopify.com/s/files/1/0438/5207/1074/files/sezejemibivezizesu.pdf
    • https://cdn.shopify.com/s/files/1/0438/6455/5675/files/4286847390.pdf
    • https://cdn.shopify.com/s/files/1/0441/0087/8488/files/26968908707.pdf
    • https://cdn.shopify.com/s/files/1/0435/1187/3688/files/how_to_uninstall_xbox_games_on_pc.pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/captain_america_1_1941.pdf
    • https://cdn.shopify.com/s/files/1/0429/8558/6841/files/46928584152.pdf
    • https://cdn.shopify.com/s/files/1/0448/2344/5666/files/55102907811.pdf
    • https://cdn.shopify.com/s/files/1/0430/5698/8311/files/72312621273.pdf
    • https://cdn.shopify.com/s/files/1/0436/4645/1862/files/91346921866.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_off0000699b.bin
fa7bc6f37bc23e9ef9a124efdad744f6ebf7c2610af7ced3eb37a26faf681fa0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x699B 5488 bytes
font_01_sfnt_off00007c2f.bin
ad62c2e7abff5734fb486b426f5abf612b96b07e952b1f4c10681d36d6ee63f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2F 13856 bytes

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