Malicious PDF — malware analysis report

Static analysis result for SHA-256 af7dcefb6ad683a7…

MALICIOUS

PDF

65.7 KB Created: 2020-08-12 05:08:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8c62c0d2a878caac17b96182b1801c8 SHA-1: 5a7be9276d2861d9d62c07d99a8bc2b0ed02e149 SHA-256: af7dcefb6ad683a7f4609e80a896abcfc7f7c8fdd0fe53c4f0e661b6e98fa842
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=explain+elastic+and+inelastic+collision+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a PDF link farm heuristic further supports the malicious intent. No scripts were extracted from this sample.

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=explain+elastic+and+inelastic+collision+pdf
    • http://files.aodex.net/uploads/1/3/1/4/131410158/xotawud.pdf
    • http://files.mylocalvendor.com/uploads/1/3/1/3/131382346/848d8d.pdf
    • http://mujiliro.qatarmma.com/uploads/1/3/2/7/132740541/witudofovuxo_dedolobinoxe_noselakile.pdf
    • https://cdn.shopify.com/s/files/1/0430/8838/0061/files/88287783079.pdf
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/2006_hyundai_sonata_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8395/files/rekaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/8924/8924/files/71870598135.pdf
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/carb_cycling_meal_plan_for_females.pdf
    • https://cdn.shopify.com/s/files/1/0432/4183/2615/files/19472222097.pdf
    • https://cdn.shopify.com/s/files/1/0436/1663/2992/files/stanley_myers_cavatina_piano.pdf
    • https://cdn.shopify.com/s/files/1/0431/1479/1069/files/vukiminaxov.pdf
    • https://cdn.shopify.com/s/files/1/0431/0692/6741/files/61641525893.pdf
    • https://cdn.shopify.com/s/files/1/0429/7929/5383/files/rainbow_part_2_english_book_class_12_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6480/2982/files/zafowevuxuwi.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_off00009e23.bin
180e10de34d1da946ef60b27b18e30a407b51d5cc73be7e0780ebc2007dcb173		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E23 5080 bytes
font_01_sfnt_off0000af7d.bin
14f781ef7d2bc199f94a1a43fa8e77f0fa6c4e3e5d48113371732b40160730ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAF7D 16316 bytes
font_02_sfnt_off0000e2ac.bin
59ca59c4b200553cc6448d99105df461db67f867f6b5f798f56b6a875aec93e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE2AC 16420 bytes

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