Malicious PDF — malware analysis report

Static analysis result for SHA-256 32c08add6a919488…

MALICIOUS

PDF

40.8 KB Created: 2020-08-18 16:15:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8352f74dce332a70d40a09666b284a96 SHA-1: e311e2292c4938e087d5aa61c7e99626d9b0add8 SHA-256: 32c08add6a91948816682483b9974fb5aac7d46606df162af1c50c3925f48cf3
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=geometry+proofs+worksheet+pdf', suggesting a lure to download further content. The presence of numerous Shopify-hosted PDF links indicates an attempt to create a large, SEO-optimized link farm for malicious distribution.

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=geometry+proofs+worksheet+pdf
    • http://ganobel.katie-hurst-textiles.co.uk/uploads/1/3/0/8/130813094/a97b5b1ecc4.pdf
    • http://files.getjohnsoninsurance.com/uploads/1/3/1/4/131438459/5dad5b5c.pdf
    • https://cdn.shopify.com/s/files/1/0428/3056/1436/files/numunoxu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8948/5223/files/22486120937.pdf
    • https://cdn.shopify.com/s/files/1/0430/2602/2554/files/xafajam.pdf
    • https://cdn.shopify.com/s/files/1/0438/7015/9016/files/xaduxaredanazoxepatafowe.pdf
    • https://cdn.shopify.com/s/files/1/0431/3969/4741/files/comparative_public_policy.pdf
    • https://cdn.shopify.com/s/files/1/0431/8812/5857/files/sibimumuwelizuzukibive.pdf
    • https://cdn.shopify.com/s/files/1/0430/9667/0365/files/90376436929.pdf
    • https://cdn.shopify.com/s/files/1/0437/1293/8152/files/13873243807.pdf
    • https://cdn.shopify.com/s/files/1/0437/5845/2897/files/gods_pocket_rotten_tomatoes.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/zirukijaxawivato.pdf
    • https://cdn.shopify.com/s/files/1/0434/7589/4437/files/analyzing_scatter_plots_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/4920/6439/files/89405060505.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_off000060da.bin
b0c90eece7adc0d593431c12214b5e667d61381626668dbf5b55d33741b249cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60DA 5328 bytes
font_01_sfnt_off000072f8.bin
8e2d8c15ecaf9e6974fcc7ef0389cb962b8bedfb2925a9a9c36cec26a6362d78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72F8 10380 bytes

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