Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3e999a469014134…

MALICIOUS

PDF

63.2 KB Created: 2020-08-31 09:04:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f81d158d3ea06b5a2b12457ee298a89c SHA-1: 8736c014a85fa8e46b3ea61160bb2f3fa67216a2 SHA-256: b3e999a469014134a349aad39b8bb5d2b8f548dddd21bdaaa81e17acca28220b
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, which points to ttraff.ru. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body contains text suggesting a 'download' lure, further supporting the malicious redirector attack pattern. No scripts were extracted from this sample.

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=bernina+1090+manual+free
    • https://cdn.shopify.com/s/files/1/0428/1391/5303/files/56439336170.pdf
    • https://cdn.shopify.com/s/files/1/0433/0012/6885/files/mogewuzilomokef.pdf
    • https://cdn.shopify.com/s/files/1/0434/6770/2432/files/62098910603.pdf
    • https://cdn.shopify.com/s/files/1/0428/6929/3223/files/toyota_avensis_2012_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/9967/6060/files/90170012965.pdf
    • https://cdn.shopify.com/s/files/1/0434/3886/6593/files/45281954589.pdf
    • https://cdn.shopify.com/s/files/1/0434/3857/1670/files/state_election_commission_kerala_forms.pdf
    • https://cdn.shopify.com/s/files/1/0433/4908/2264/files/viwefebitenerapapa.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8331/files/wuvitabujapukajavowomi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6304/0413/files/zakhmi_dil_chupa_ke_royenge_video.pdf
    • https://static.usrfiles.com/ugd/1df9ea_463bdf82bef04b6d9c2916f14bcf2b39.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd4de72e93eb4c70991de63e2712227d.pdf
    • https://static.usrfiles.com/ugd/db93e9_09a646286a114f468ced3822795edac7.pdf
    • https://static.usrfiles.com/ugd/b8c837_21746769b7df4ad4b972569c2d0c0613.pdf
    • https://static.usrfiles.com/ugd/b8c837_e4b7d39b72a64b3a9ebd791606d268f6.pdf
    • https://cdn.shopify.com/s/files/1/0431/0846/6845/files/aditya_hridayam_stotram_odia.pdf
    • https://cdn.shopify.com/s/files/1/0427/4061/3286/files/epitheliaal_myoepitheliaal_carcinoom.pdf
    • https://cdn.shopify.com/s/files/1/0430/9165/6864/files/47746758298.pdf
    • https://cdn.shopify.com/s/files/1/0435/2193/3466/files/59341632500.pdf
    • https://cdn.shopify.com/s/files/1/0432/3511/5175/files/35885732173.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/
    • https://cdn.shopify.com/s/files/1/0433/0012/688

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b55f.bin
dba5848fad58a942bba6720237fdbb1d7d393047cc48d122496cf3f395a804ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB55F 5136 bytes
font_01_sfnt_off0000c6bc.bin
3b2749d8a5c16d3bf35bdf3bec8cd8a8f40ca1dda4bcfe8ef9e9a80da14e711f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC6BC 12296 bytes

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