Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d0d695faf37eeaa…

MALICIOUS

PDF

50.5 KB Created: 2020-08-22 20:56:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 870bc9aaacf63d4cb7ee128ee347f740 SHA-1: 6938ba077ec5e36aa7b6c763be7bae222e037ca1 SHA-256: 3d0d695faf37eeaa740a6b5a7f31c8af2eb76fdfe29c810cf744204773b6cfbf
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, disguised as a game guide. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, and the 'PDF_SEO_LINK_FARM' heuristic indicates a large number of outbound links, many hosted on Shopify, likely to obscure the malicious destination. The document body, though heavily corrupted, contains text related to 'Animal Crossing' and the malicious URL, reinforcing the lure.

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/pify?keyword=animal+crossing+new+leaf+all+fish+guide
    • http://files.fodmapfoodie.co.uk/uploads/1/3/1/6/131606630/bb6b7c887ab870.pdf
    • http://files.coronavirusremotepatientmonitoring.com/uploads/1/3/1/0/131070911/tepiju.pdf
    • http://files.chel.com.au/uploads/1/3/0/8/130814774/1a1cf6f5d289.pdf
    • https://cdn.shopify.com/s/files/1/0432/4111/1707/files/86355428077.pdf
    • https://cdn.shopify.com/s/files/1/0434/3581/9173/files/83147317463.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/baxopokimuxivufuki.pdf
    • https://cdn.shopify.com/s/files/1/0447/2838/5690/files/59071416968.pdf
    • https://cdn.shopify.com/s/files/1/0431/8488/1825/files/46539890280.pdf
    • https://cdn.shopify.com/s/files/1/0435/5109/6984/files/vesudikadamomulukadod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/golalebilafofuzugetuvi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/18807719429.pdf
    • https://cdn.shopify.com/s/files/1/0430/9693/2505/files/wenebizobopuxotuferifetef.pdf
    • https://cdn.shopify.com/s/files/1/0437/9289/2053/files/13436692965.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/26805166820.pdf
    • https://cdn.shopify.com/s/files/1/0433/0432/1177/files/gupuvorajel.pdf
    • https://cdn.shopify.com/s/files/1/0432/9527/7214/files/nifebepivokil.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_off000069b8.bin
d1968f9316697d237a20afaf149970a34c198b98d6c46d4dc9f074c6193aadc3
pdf-font-stream PDF embedded font (sfnt) at offset 0x69B8 5316 bytes
font_01_sfnt_off00007b8c.bin
3ef713d4164190cc0f038571cfb7e9638dd6a5a2aa339d36de86c92d208b04e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B8C 15640 bytes
font_02_sfnt_off0000abfb.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xABFB 4324 bytes