Malicious PDF — malware analysis report

Static analysis result for SHA-256 349f30cdf538fe82…

MALICIOUS

PDF

42.2 KB Created: 2020-08-31 00:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7f47a8810dbee8130f517cb3f1c39b7 SHA-1: 1876cb0f29c4749edaf3f1a33d7f8ad2fee67502 SHA-256: 349f30cdf538fe82abee5323988e087a292f67e8f03220ed5f4b318e23815e8b
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely intended to lead the user to a malicious site. The document body and embedded URLs suggest a lure related to popular children's characters to entice clicks. The PDF also contains a link farm pointing to numerous other PDFs, likely for SEO poisoning or to distribute further malicious content. 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.cc/wix?keyword=erzurumlu+niloya+tospik+%25C5%259Fark%25C4%25B1s%25C4%25B1+indir
    • https://cdn.shopify.com/s/files/1/0428/5313/8591/files/wusixaravedivuzaxoze.pdf
    • https://cdn.shopify.com/s/files/1/0438/2208/8354/files/89972797438.pdf
    • https://cdn.shopify.com/s/files/1/0432/3432/8738/files/misegadegokosog.pdf
    • https://static.usrfiles.com/ugd/09273f_9215ba2af6cc451688e7f976f85d0f68.pdf
    • https://static.usrfiles.com/ugd/3e5d97_b079de06234842a692422a1b99ad69e9.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_defa1a4123e14e7d8519e08f3048edf3.pdf
    • https://static.usrfiles.com/ugd/912de2_0c1fc44278ee41b39cbb8df49576e464.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_de76f229df2d48e1a73bab8ded8e9c7d.pdf
    • https://static.usrfiles.com/ugd/db1da1_0e4ad60dfbce46b2b15feecc6214b9dc.pdf
    • https://static.usrfiles.com/ugd/c1de29_14209191fb87443eafce5c2c37b11762.pdf
    • https://static.usrfiles.com/ugd/b8c837_e60a3f6fed6a4e6895ae32bda2748de4.pdf
    • https://static.usrfiles.com/ugd/2486b5_c1f751e1dea3487b8b370d4372055d9e.pdf
    • https://static.usrfiles.com/ugd/9219f8_eb5faa070dfc444f83174edeb77a2cc9.pdf
    • https://static.usrfiles.com/ugd/b8c837_aca4c2f294084a67a36027cb9138f938.pdf
    • https://static.usrfiles.com/ugd/b8c837_6d928d30a28b4f8c87529791b03cfff4.pdf
    • https://static.usrfiles.com/ugd/9cfd0a_ccf76b778ccb45588bf0cb1ff2017db1.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004643.bin
1c0194992044e0d7b0b8da085a89f652d8bfba0cdc5c7a629eb59246e8dd218e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4643 5324 bytes
font_01_sfnt_off000057bd.bin
1decd32699ddc80437908bb54b2447db3c9ec67f0f97a2b180a0d86a3c64adbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57BD 4600 bytes
font_02_sfnt_off00006936.bin
88ae21aa13a97e42cab4d69bb2367346c22a338c69633e4b0b04eb1991ec9638		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6936 10344 bytes
font_03_sfnt_off00008afe.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AFE 4324 bytes

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