Malicious PDF — malware analysis report

Static analysis result for SHA-256 a177d16b8aa984f1…

MALICIOUS

PDF

42.0 KB Created: 2020-08-30 22:39:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bcc631363a83c94ce7cb950a86c9da7c SHA-1: 2b757240b16cfd79f71c17a6e2bdd33bcfbb23d4 SHA-256: a177d16b8aa984f1b7c0df42b8aa0824b2065ab2bdb6675ffd3bdfc7fa1fe3d4
150 Risk Score

Malware Insights

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

The PDF contains a prominent link with the text "Superhero full movies hd" which, upon inspection, redirects to a malicious URL. This suggests a social engineering tactic to trick users into clicking the link. The PDF also contains a large number of other links, many hosted on Shopify, which are likely part of a link farm to improve SEO for malicious content. 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.me/wix?keyword=superhero+full+movies+hd
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/38550623617.pdf
    • https://cdn.shopify.com/s/files/1/0438/3126/3394/files/jefaxixivak.pdf
    • https://cdn.shopify.com/s/files/1/0428/8518/5702/files/gigujitezikoped.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97697777452.pdf
    • https://cdn.shopify.com/s/files/1/0436/1519/1202/files/66475424076.pdf
    • https://cdn.shopify.com/s/files/1/0436/3298/4222/files/59785115302.pdf
    • https://cdn.shopify.com/s/files/1/0429/7365/9290/files/minamavufafikesonibukuza.pdf
    • https://cdn.shopify.com/s/files/1/0439/0407/3880/files/tomoru.pdf
    • https://cdn.shopify.com/s/files/1/0434/7628/7648/files/admiralty_law_words.pdf
    • https://static.usrfiles.com/ugd/2ca09c_9246d620c2b14d0b959688a02730fca9.pdf
    • https://static.usrfiles.com/ugd/c836c3_454f150b115046edaa3e571c724e88e2.pdf
    • https://static.usrfiles.com/ugd/b8c837_4001a1d077f04dfb8ff7ec805c7a4879.pdf
    • https://static.usrfiles.com/ugd/b8c837_252bb4464eba48129b44f48d3fa92da9.pdf
    • https://static.usrfiles.com/ugd/b8c837_9e4e2a1d621446939847d2da4ef603dc.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_off0000666c.bin
e08844186b2d9fca13994630cd7a0b08cbce611883bafe8ccd1ef8a4630f8305		 pdf-font-stream PDF embedded font (sfnt) at offset 0x666C 5232 bytes
font_01_sfnt_off00007820.bin
705e45d22053f49d7d8689bd6a3c4499717334015dcd73114366a9a0e4f60758		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7820 10288 bytes

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