Malicious PDF — malware analysis report

Static analysis result for SHA-256 959330e04b43206e…

MALICIOUS

PDF

57.1 KB Created: 2020-07-30 22:46:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af50651f8821780e3f3e297797fa04ec SHA-1: 1ca673bc74d4b2892008f40cfeebe4289b066ba1 SHA-256: 959330e04b43206ed740c6b308fbf364aa0f4dbe07b6f14345c816c4b84f3139
128 Risk Score

Malware Insights

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

The PDF file contains embedded links that redirect to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to 'Java design patterns tutorial'. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to distribute malicious content. The SE_INVOICE_LURE heuristic further suggests a deceptive intent, possibly to trick users into clicking the malicious link.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.ru/pify?keyword=java+design+patterns+tutorial+with+examples+pdf
    • http://files.elginparkathletics.com/uploads/1/3/1/4/131406413/xikudenaw.pdf
    • http://files.sailingcruisingscotland.com/uploads/1/3/0/9/130969481/regodewu-wawanoruko.pdf
    • http://files.cninc.org/uploads/1/3/2/7/132740479/5324237.pdf
    • http://files.okstructures.com/uploads/1/3/2/6/132681665/tokesipimilum.pdf
    • http://files.okstructures.com/uplo
    • https://cdn.shopify.com/s/files/1/0431/2956/9429/files/pezavukekovokozapavo.pdf
    • https://cdn.shopify.com/s/files/1/0427/4513/5260/files/22055474806.pdf
    • https://cdn.shopify.com/s/files/1/0428/7240/6179/files/2120923966.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32808714247.pdf
    • https://cdn.shopify.com/s/files/1/0435/4700/0983/files/josovezogefodatupewo.pdf
    • https://cdn.shopify.com/s/files/1/0427/5575/2103/files/durojipun.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/22129213709.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/6965210923.pdf
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/3375025395.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51031200676.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/9108618329.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_off00009aa7.bin
7ae447dcaf48dcada90f36ee3707274f749c8b2752c470ac2d94acc3cc682420
pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA7 5548 bytes
font_01_sfnt_off0000ad6a.bin
7a4bd3a58f523b48d0badf3611b33dc54c0709f999f42b048b4916ae9fbbe961
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD6A 12908 bytes