Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cdbb827676803af…

MALICIOUS

PDF

64.2 KB Created: 2020-08-06 23:00:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82319bbd720f25b907024f185468d0a1 SHA-1: c43679f1de4bce229eac76b9148d56ef254d21eb SHA-256: 8cdbb827676803af91fd5fc62ec4b283a554924ae887b78e9d3d41046e655fff
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=raw+diet+recipes+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many pointing to Shopify domains. The presence of a 'download button' heuristic further suggests a lure to trick the user into clicking the malicious link. The document body, though heavily obfuscated, contains references to the malicious URL and other PDF links.

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.com/pify?keyword=raw+diet+recipes+pdf
    • http://files.footmadbirmingham.org/uploads/1/3/1/3/131381231/d9ff5332f.pdf
    • http://files.sharmilainc.com/uploads/1/3/1/6/131636988/865f624c.pdf
    • http://files.sastinson.com/uploads/1/3/1/6/131637853/7731380.pdf
    • http://files.vickiwhitethesciencelady.com/uploads/1/3/0/7/130775497/d176c1171c98ae2.pdf
    • https://cdn.shopify.com/s/files/1/0432/0457/5387/files/rubepalunifu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2554/files/sumogiposojaji.pdf
    • https://cdn.shopify.com/s/files/1/0437/6769/3474/files/81256793014.pdf
    • https://cdn.shopify.com/s/files/1/0448/5450/9729/files/mastering_autocad_civil_3d_2020_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/pixagojujotufovowoz.pdf
    • https://cdn.shopify.com/s/files/1/0438/8601/8712/files/dns_server_might_be_unavailable.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/zisinadekapikeg.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/nebotaxeruzatefoziju.pdf
    • https://cdn.shopify.com/s/files/1/0438/5924/7264/files/28432094756.pdf
    • https://cdn.shopify.com/s/files/1/0428/5209/0022/files/rijidofoxaremuduwab.pdf
    • https://cdn.shopify.com/s/files/1/0434/0993/2440/files/83327858821.pdf
    • https://cdn.shopify.com/s/files/1/0439/9002/4350/files/petarefiza.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cfe.bin
2a981c80137892c8af277f6686427237a359880b644953ba59e74aab0621aa90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFE 5216 bytes
font_01_sfnt_off00008ee4.bin
d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE4 3720 bytes
font_02_sfnt_off00009a47.bin
e0f928dbc1701c00d0979ada497d11135a7a8e2cb4bca24086499159957190eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A47 10448 bytes
font_03_sfnt_off0000bd90.bin
e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD90 16092 bytes
font_04_sfnt_off0000d295.bin
72a18d0735d62e85739ccf961e7a4414bf2cfec3120b3ac6f0745580b2de0a91		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD295 10104 bytes

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