Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ff967f207fe8144…

MALICIOUS

PDF

46.7 KB Created: 2020-08-12 20:59:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e8a304277166f7a33f30dacf9f7e5cd SHA-1: 154f48f6e15cb4f9e67da6184dd9f1a22eb5044a SHA-256: 8ff967f207fe8144d5f2358f5a2b9adb63ab098e80d85f3c30b178d2a2115d5e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to redirect users to malicious infrastructure. The primary malicious URL identified is https://ttraff.com/pify?keyword=books+to+read+in+pregnancy+pdf, which is likely used to obscure the final destination. The document body, though heavily corrupted, contains references to the topic 'books to read in pregnancy pdf', suggesting a lure to disguise the malicious intent. The presence of numerous external links, many hosted on Shopify, indicates a link farm strategy.

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.com/pify?keyword=books+to+read+in+pregnancy+pdf
    • http://files.extreme-kids.com/uploads/1/3/2/8/132814476/mitibaku.pdf
    • http://files.uofttalks.ca/uploads/1/3/2/6/132681164/6e39db585.pdf
    • http://zizod.orderkupels.com/uploads/1/3/1/8/131857054/14a03fcd6.pdf
    • http://files.rominaberenicecanet.com/uploads/1/3/0/8/130874241/916995.pdf
    • https://cdn.shopify.com/s/files/1/0433/2732/4310/files/93510387936.pdf
    • https://cdn.shopify.com/s/files/1/0434/8103/9013/files/revofiliju.pdf
    • https://cdn.shopify.com/s/files/1/0434/4800/8866/files/pevudixikugobisoradibi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/22483440910.pdf
    • https://cdn.shopify.com/s/files/1/0431/1056/3994/files/47677629960.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3944/files/40746185021.pdf
    • https://cdn.shopify.com/s/files/1/0433/5278/5055/files/42634724333.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/92128131552.pdf
    • https://cdn.shopify.com/s/files/1/0428/9950/5311/files/pisexuzadufudil.pdf
    • https://cdn.shopify.com/s/files/1/0432/6499/9588/files/real_book_volume_1.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/gixelalukiwimumima.pdf
    • https://cdn.shopify.com/s/files/1/0439/2642/1672/files/vawebutoxame.pdf
    • https://cdn.shopify.com/s/files/1/0433/4636/2523/files/depugijotununezom.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_off000078d1.bin
9adae4c51e6568ba3aa6a99bc66164118c2d56f2e3fbb0716ee55c9cadcad59e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D1 5508 bytes
font_01_sfnt_off00008ba7.bin
6b75265b7bcecafd36f3f4fdc9c299a7ce02ed80d0c99eb989102f00945a3456		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 10036 bytes

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