Malicious PDF — malware analysis report

Static analysis result for SHA-256 e888e247071c441a…

MALICIOUS

PDF

47.5 KB Created: 2020-08-30 06:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76388ed43b08d2419d0b92c5cd3581e1 SHA-1: c57516fdfe81fcab0ae0732b792f79bef4f2ac2f SHA-256: e888e247071c441ab85f70ecc742401a78487c5039dfea2955d0684688eaa1b0
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 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Manhattan GRE books' and the malicious URL, suggesting a lure to entice users to click the link. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to benign content, but the primary redirector is malicious. 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=manhattan+gre+books+latest+edition
    • https://static.usrfiles.com/ugd/0c8cc8_142341d985334603a3ab9c6882409bd7.pdf
    • https://static.usrfiles.com/ugd/b8c837_b58bd7371b9e4bb192edae163889cf27.pdf
    • https://static.usrfiles.com/ugd/221f3a_83f38df4a84f46e795089fb925a3da06.pdf
    • https://cdn.shopify.com/s/files/1/0431/0374/8260/files/mieszanka_czasw_angielski_wiczenia.pdf
    • https://cdn.shopify.com/s/files/1/0432/0300/2523/files/88442772727.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7589/files/volodos_rachmaninoff_cello_sonata_pdf.pdf
    • https://static.usrfiles.com/ugd/b8c837_2e3a30113151436e925358d05a45388e.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc452fa2eb70412d8e14ec26c9e38961.pdf
    • https://static.usrfiles.com/ugd/b8c837_3448b3437dd041c5b940b5a6fd1bfefe.pdf
    • https://static.usrfiles.com/ugd/d2751c_93908e7a89dd43598369b6ea816dc2f3.pdf
    • https://cdn.shopify.com/s/files/1/0441/0834/9592/files/36182242360.pdf
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/pazefewojaledi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1562/files/defipevafejezebuzop.pdf
    • https://cdn.shopify.com/s/files/1/0430/6770/3457/files/79740013578.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_off00007ba2.bin
a1c9773c8c7c8e93be48659e3de925d86bc8616d0e46201b3143286b876563ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA2 5296 bytes
font_01_sfnt_off00008d93.bin
99fa468a1e5437486fe6f9cd610cac87281de161f32d0ea3230da500deb7b8ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D93 10656 bytes

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