Malicious PDF — malware analysis report

Static analysis result for SHA-256 95e28f2932a5af8f…

MALICIOUS

PDF

64.1 KB Created: 2020-09-19 23:13:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0385046c8fbd7e5f7d768167234f22d2 SHA-1: 7c90d7f58d44dc43753b83586e64b4628974d36b SHA-256: 95e28f2932a5af8f90f6f63411c53f25411c129520b4aea1c5a748ff799a9d67
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to a URL that includes 'life creatures of the deep worksheet answers'. This, combined with the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic, indicates a social engineering attempt to trick the user into clicking the link. The document body, though heavily obfuscated, contains the same lure text and the malicious URL. The PDF also hosts a link farm on Shopify, likely for SEO manipulation to increase visibility of the malicious content.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.me/wix?keyword=life+creatures+of+the+deep+worksheet+answers
    • https://cdn.shopify.com/s/files/1/0430/6383/6834/files/sutulukijusofokozapaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/9072/2472/files/gojekatunuse.pdf
    • https://cdn.shopify.com/s/files/1/0430/5797/1354/files/benafikamal.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3871/files/vobeg.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/mac_preview_quartz_filter.pdf
    • https://cdn.shopify.com/s/files/1/0434/1553/5774/files/foganepubofinofupufodimam.pdf
    • https://cdn.shopify.com/s/files/1/0484/7619/2929/files/kulam.pdf
    • https://c4cfe29d-0d84-4d3f-a8d4-a07652dae7fe.filesusr.com/ugd/98d33d_5aa7635adef549eda8097508c151334b.pdf?index=true
    • https://a72385dc-0d17-430c-a938-776005473521.filesusr.com/ugd/ba2c19_9ee0a3b3b29248888ae327c1887d13b0.pdf?index=true
    • https://a9d75a47-2123-4568-9f13-eddffb6e8b46.filesusr.com/ugd/33a2e4_946415cf6fcc475caf46ca061f16537f.pdf?index=true
    • https://421201c1-9b10-47f2-be0b-5d2ffbb7a6d9.filesusr.com/ugd/b3318b_1e4b192b061d4342a57344e7a44cc267.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0431/5319/5165/files/boasty_remix_instrumental.pdf
    • https://cdn.shopify.com/s/files/1/0439/0912/0152/files/37652243191.pdf
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/zufuvodabod.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_off0000b055.bin
fb61c20c9e1bd5653b4634c4c69a6481b9014710ce9df5c97c14aaf3c14264eb
pdf-font-stream PDF embedded font (sfnt) at offset 0xB055 5308 bytes
font_01_sfnt_off0000c279.bin
92ca35c388eae911d661f2c5d29081e9ce82f16352f77baf05d80ab718dcb0a2
pdf-font-stream PDF embedded font (sfnt) at offset 0xC279 15076 bytes