Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd0c5c4520ad261d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-17 01:14:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c790e8c94bec6e7f39742b8fa6910f1d SHA-1: 6c77372e0eb7d46520f8d9edff3907e11af1f94e SHA-256: bd0c5c4520ad261d7dc9e3780feaa3b65eecbfeaf92aca45ad25f30c7b2944dc
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'bubble chart template xls' and a URL that matches the malicious redirector. This suggests a social engineering attack aiming to trick users into visiting malicious sites under the guise of downloading a useful template.

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.cc/pify?keyword=bubble+chart+template+xls
    • http://files.centerforhuman-earthrestoration.com/uploads/1/3/1/3/131380847/sewug_buvibarikubu_libunikejole_rilonap.pdf
    • http://filox.stewartsrestoration.com/uploads/1/3/1/3/131381428/c83e567218f3f4.pdf
    • http://juzemi.chapelcafe.co.uk/uploads/1/3/1/3/131381720/8754932.pdf
    • http://files.njaje.org/uploads/1/3/2/8/132814272/1775429.pdf
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/gigulenik.pdf
    • https://cdn.shopify.com/s/files/1/0429/9508/9559/files/buxidewizuberigeb.pdf
    • https://cdn.shopify.com/s/files/1/0434/6698/1542/files/pho_aefi_reporting_form.pdf
    • https://cdn.shopify.com/s/files/1/0434/7101/2006/files/corrosion_of_austenitic_stainless_steel.pdf
    • https://cdn.shopify.com/s/files/1/0434/5239/9773/files/59143436195.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5885/files/13522501645.pdf
    • https://cdn.shopify.com/s/files/1/0434/9617/7816/files/extended_metaphor_poem.pdf
    • https://cdn.shopify.com/s/files/1/0428/9842/3967/files/68545090756.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_off00006028.bin
640bc75a8bacff0d3953c832ddb9e760f81a3744cdc9c61453e43ee1d66537e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6028 5432 bytes
font_01_sfnt_off00007279.bin
48d7b94f93459b417491d5abfc1f6e88fba498409ee9a698ce677f3a4c64e2dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7279 10960 bytes

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