Malicious PDF — malware analysis report

Static analysis result for SHA-256 d12e0bca2132736e…

MALICIOUS

PDF

62.7 KB Created: 2020-08-30 11:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 957c78fd410d14e7eee5c645ee24a698 SHA-1: 891702d41f7613466b05616196c1455286d67235 SHA-256: d12e0bca2132736e291c552876323325411d860ccc386c7c4a674194e3df295d
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=nuevas+relaciones+humanas+en+el+n%25C3%25BAcl'. Additionally, another critical heuristic indicates a PDF link farm, suggesting an attempt to artificially inflate search engine rankings or distribute content through numerous links. The document body itself is largely unreadable binary data, but the embedded URL is clearly visible. No scripts were extracted from this sample.

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=nuevas+relaciones+humanas+en+el+n%25C3%25BAcl
    • https://static.usrfiles.com/ugd/217d68_8c7663a8cbae4c708ae8baf02770d67c.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f629cc0bc584e1088d5d1d04d2847f5.pdf
    • https://static.usrfiles.com/ugd/1cfe37_1da72ea6cc664fc680299cbca79ae049.pdf
    • https://static.usrfiles.com/ugd/b8c837_a917695fcc12412e834d052dc22b206c.pdf
    • https://static.usrfiles.com/ugd/0d089b_989f729c20bb4146bc1e7c4dc4dc9d6a.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ed2ea15a0cd4167ab7d6c4bb16740d8.pdf
    • https://static.usrfiles.com/ugd/76156b_3c1b90d65c5f43e5bf9a27f1451f10cd.pdf
    • https://static.usrfiles.com/ugd/516793_bcb655f5c68a4da594a731630324ae01.pdf
    • https://static.usrfiles.com/ugd/b8c837_f81a524b494b4cceaccf729746aa510e.pdf
    • https://static.usrfiles.com/ugd/07ef24_2803b57b8610407e89ac70603fdc64ce.pdf
    • https://static.usrfiles.com/ugd/912de2_7e01221ee5f54b8e9c18a10f5cdbdd9a.pdf
    • https://static.usrfiles.com/ugd/136d07_cf9b8f7761d34a8eb692192af50dfa54.pdf
    • https://static.usrfiles.com/ugd/b8c837_ecf87b87e9d6415997fea48b7193cf8d.pdf
    • https://static.usrfiles.com/ugd/c7a620_e5624c1f7669472ab3dd0f7dd9006605.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_off0000ac3a.bin
c3ecb91154aeff3d6a89ea2013454d09fc1716480a186067f41f6bd680916605		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC3A 1728 bytes
font_01_sfnt_off0000b4c5.bin
cc05258842832d8210519e9050ed05d4e474120202fcf8e4830ab6a826f494ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4C5 5184 bytes
font_02_sfnt_off0000c609.bin
5b1abe851cde968a4a3de7beddab8252d17692781989c7033d3246a4b50338e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC609 11620 bytes

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