Malicious PDF — malware analysis report

Static analysis result for SHA-256 5861186ea26ece59…

MALICIOUS

PDF

53.1 KB Created: 2020-09-18 04:13:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e67e01f1fa01061b5fd1ebee9a44e4d SHA-1: 23a5cce0bc0dde6ca02f2e1467835e1ebb14d1a1 SHA-256: 5861186ea26ece598590084ce48fec69eac7222ed6a63cf17adb43f1151c8af9
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.me/wix?keyword=mtg+m20+draft+guide, which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the intended lure. The presence of a link farm and a malicious redirector indicates a phishing or social engineering attack.

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.me/wix?keyword=mtg+m20+draft+guide
    • https://14d3bc11-b22c-4779-893c-2e883dd675d6.filesusr.com/ugd/b88e3d_19fd763bf3354109a599a508dc2b3f33.pdf?index=true
    • https://76181d94-68cd-49bc-a23b-bb8dc44fa9e4.filesusr.com/ugd/46bfb0_9a4573d7fb1f425c9bc40cd355debe15.pdf?index=true
    • https://0455baef-ddf7-4cdc-961f-07048e25c475.filesusr.com/ugd/a18601_a2d7d81b1c3c43e4bf0ba3ee9ef6b922.pdf?index=true
    • https://d5d7bcb1-0078-4473-be73-6f93bd12a019.filesusr.com/ugd/4a2613_f2445b3885cc4c60983103d1c77759cc.pdf?index=true
    • https://3fadd123-c5a0-4c45-80f3-52ee882970a8.filesusr.com/ugd/cdb50c_d6e5ca9c32544b82b44e264d27ea75cb.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/running_record_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/7713/1683/files/zuwekux.pdf
    • https://cdn.shopify.com/s/files/1/0429/3227/3319/files/buxaladubowiganidifixen.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/31748859894.pdf
    • https://4af6b778-b11c-4d88-b926-a5009c236438.filesusr.com/ugd/3be3a7_f2d00db378be40d897698b7970a148a6.pdf?index=true
    • https://df605f95-fde0-42ce-af0c-e3cd19f15162.filesusr.com/ugd/df7b34_b2d6b46ff9d74badaabcb8960632c5f9.pdf?index=true
    • https://1fcbd2ba-fce0-4010-9920-59d85132e56f.filesusr.com/ugd/7e0eb0_46c2977aff3b45b88c5d03ef1032e157.pdf?index=true
    • https://4143bbb4-9d20-4ad3-a3fc-885444bf28e8.filesusr.com/ugd/dbad32_f825a307b76145c4b920c8973057e63d.pdf?index=true
    • https://020d39f1-ded3-46f7-bce4-7b271855f8dc.filesusr.com/ugd/a31856_7b50b018a35746808c12028d5447405d.pdf?index=true
    • https://ff28a48c-f615-492c-b33c-cc703ea7b8b2.filesusr.com/ugd/d38238_519ea9d77bce42a1a68a50cf6536ea1e.pdf?index=true
    • https://eb203ce3-49b4-45b3-8e25-e6e58cd51502.filesusr.com/ugd/e5d5e5_c2a4d652f6b64753a2b3f58597907412.pdf?index=true
    • https://971069f0-df29-4de6-9a08-fa85d6039d07.filesusr.com/ugd/ca9b0a_d9b752299b814082b7ed0376aa67b643.pdf?index=true
    • 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/
    • https://971069f0-df29-4de6-9a08-fa85d6039d07.filesusr.com/ugd/ca9b0a_d9b752299b814082b7e

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000092a3.bin
73f9e1d2e9a4ab0c0c06381ed27b184173602d49977234f322528b32c3a473d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92A3 5296 bytes
font_01_sfnt_off0000a4a2.bin
e4950d403708858b0da43839b1ba944cd56b564b90bfef465486a94ffd4802c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4A2 10336 bytes

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