Malicious PDF — malware analysis report

Static analysis result for SHA-256 006341d8cc9f469a…

MALICIOUS

PDF

202.8 KB Created: 2020-08-30 04:11:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64e5fb16b84f58d7f939656c3e99ffd5 SHA-1: 1ef425d9be1c8b09f4034010dec63b91b90b70fe SHA-256: 006341d8cc9f469a551872b07f3be0b55b0fc0ff837179840338c3e2e5aaedc9
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a link to known malicious redirector infrastructure. The embedded URL, https://ttraff.com/wix?keyword=edward+barney+propaganda, is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, appears to contain the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wix?keyword=edward+barney+propaganda
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b0b521_a592a452bd134a2d84550043737c715e.pdf
    • https://static.usrfiles.com/ugd/105a8c_8242a644cda2443991de8db2d4176bf5.pdf
    • https://static.usrfiles.com/ugd/b8c837_045c7a683e3b4c32bcab05f62dbaa407.pdf
    • https://static.usrfiles.com/ugd/b8c837_39f0f66d1d6e4fa6876cafb002f957c2.pdf
    • https://static.usrfiles.com/ugd/b8c837_345a2890becb4ebc98417d0748cca333.pdf
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/vuvixerirokedorasabute.pdf
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/golif.pdf
    • https://cdn.shopify.com/s/files/1/0436/0654/0445/files/cambridge_primary_science_learner_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0431/1026/9085/files/30835559236.pdf
    • https://static.usrfiles.com/ugd/c068f8_e15b90125144427f9eed9be6bb37099c.pdf
    • https://static.usrfiles.com/ugd/e2f7e1_0d7c43a567414763827f37291311639a.pdf
    • https://static.usrfiles.com/ugd/b8c837_934e2118687c44ffa2d7841d581f7731.pdf
    • https://static.usrfiles.com/ugd/576447_d5d5e7611fc54a0597ef22b284967e19.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002e732.bin
0fb9843c25e866caf593b1c8ce7fa24440b39dbbbc5c217fb7a1f808bb1c3423		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E732 5208 bytes
font_01_sfnt_off0002f912.bin
afac269ead06b382b3154f4423b56f9b86d49db2bcef315ab50ce8f03bd4e567		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F912 10704 bytes

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