Malicious PDF — malware analysis report

Static analysis result for SHA-256 5685e24eb39857a0…

MALICIOUS

PDF

44.3 KB Created: 2020-08-29 02:14:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 766abac82a6fb81886b571d339503ec2 SHA-1: 95a4d995dc73e99387f6de825aa349c9f5d8ce06 SHA-256: 5685e24eb39857a024ccff85353417efb15a24d07c409f2006bd54b5f214db33
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=kudos+rock+legend+free+full+version'. The document body, though heavily obfuscated, contains this URL and a reference to 'Kudos rock legend free full version', suggesting a lure for potentially unwanted software or malware. The presence of a PDF link farm heuristic further indicates a pattern of distributing links, likely to facilitate further malicious activity.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/wix?keyword=kudos+rock+legend+free+full+version
    • https://static.usrfiles.com/ugd/b8c837_e4c76b55ed074d8d961342a8d845414e.pdf
    • https://static.usrfiles.com/ugd/b8c837_12a2c57c7965420c90df64c0087b1f9b.pdf
    • https://static.usrfiles.com/ugd/b8c837_204a331194f440838d8c927d2a2c01f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_31dbd8fa2f504700938b1a38cfc66fb1.pdf
    • https://static.usrfiles.com/ugd/b8c837_94edcd628222499db122969ffb686d75.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d063b16b638444591983e4b14169fff.pdf
    • https://static.usrfiles.com/ugd/b8c837_3dd82ebf56a74c928ccb333f79a8b452.pdf
    • https://static.usrfiles.com/ugd/b8c837_bbd8abcb46b74c278e131be0b1abfa6e.pdf
    • https://cdn.shopify.com/s/files/1/0433/4452/7511/files/35358667067.pdf
    • https://cdn.shopify.com/s/files/1/0438/5413/5456/files/multivariable_calculus_concepts_and_contexts.pdf
    • https://cdn.shopify.com/s/files/1/0433/6756/3418/files/wibidilanofezivupirorutaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27360052690.pdf
    • https://cdn.shopify.com/s/files/1/0461/7597/7625/files/alien_skin_exposure_7_free_windows.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a94f739d6e941dbae269390221e042c.pdf
    • https://static.usrfiles.com/ugd/b8c837_455f551428b740809a72f88b29ea7ddc.pdf
    • https://static.usrfiles.com/ugd/b8c837_3dc3a6cc412c4f74a54d1d6571b24b38.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_off00006db5.bin
b92de2065c70d6fb6b91125af214ee8bb3f576c16ca54502c2013316be5eb610
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB5 5072 bytes
font_01_sfnt_off00007f10.bin
e26b28ded6a7c8f6ce30d3d3e64cbf1ba23e59dad673754384ccef879a32628a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F10 11104 bytes