Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f215b2291381d6…

MALICIOUS

PDF

49.7 KB Created: 2020-08-31 21:08:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3d7ce6bc9a9dd532a09aae26ee56dcd SHA-1: 9576aaa4e5b7fb9ef65985800b284692b06b95b4 SHA-256: a4f215b2291381d62d8d494d0e2db106e25ffcedddf6497d9697c0778872ad35
150 Risk Score

Malware Insights

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

The PDF document contains a lure for 'New movies hd hollywood' and is flagged as a malicious redirector and a link farm. The ML classifier also strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely leads to further malicious content or phishing pages. No scripts were extracted, and the document body was heavily obfuscated.

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/pify?keyword=new+movies++hd+hollywood
    • https://static.usrfiles.com/ugd/4e6dd5_12be1aa74bfb46bc877b9ff37ef5b618.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_bdf3a2e53d52425ea3d541e480877824.pdf
    • https://static.usrfiles.com/ugd/a8ca0f_3e47275003e34e80b51e94599db31f10.pdf
    • https://static.usrfiles.com/ugd/469aea_8b29978c03fb41348b62628966fe78d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_10d0b055c36f4579b1d805f4e1d35ce0.pdf
    • https://static.usrfiles.com/ugd/eda9ba_b6d0712d71ab4ed4aa11b622a04fa0d2.pdf
    • https://static.usrfiles.com/ugd/ac51ce_180885a76990443798ed2334711ce71c.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/cartomancy_books.pdf
    • https://cdn.shopify.com/s/files/1/0435/3458/1911/files/fezig.pdf
    • https://cdn.shopify.com/s/files/1/0430/9155/8551/files/96076663601.pdf
    • https://cdn.shopify.com/s/files/1/0450/1500/7390/files/andragogy_malcolm_knowles.pdf
    • https://static.usrfiles.com/ugd/804ff6_9548f5df63f04fe4b0556212104dcf82.pdf
    • https://static.usrfiles.com/ugd/9734e7_2790a85a4762476f9c3ea48596d2cd3e.pdf
    • https://static.usrfiles.com/ugd/0aab01_4f4f57511ebc464aa7644b79801791ac.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_off000078e6.bin
2d1aefa45f2bb1e355161eda49b238ed9be087f5b5211a2bd8b611895e5bc3e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78E6 4584 bytes
font_01_sfnt_off00008894.bin
ab437e70da4e2471f5d9ed59130a947808fa50d7beabf498ad32db4e87c6df6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8894 10436 bytes
font_02_sfnt_off0000ac1e.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC1E 4324 bytes

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