Malicious PDF — malware analysis report

Static analysis result for SHA-256 de763edf1d811194…

MALICIOUS

PDF

45.4 KB Created: 2020-08-10 23:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e1583e73b8f70655405130cfd5676a1 SHA-1: b617f561d7fc0eed180585320b9d4e209d9c5ab1 SHA-256: de763edf1d8111942a7512ea77ff737d792075c482c5a585025182e4c578fce7
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though partially corrupted, suggests a lure related to 'Java programming language pdf notes'. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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.ru/pify?keyword=java+programming+language+pdf+notes
    • http://files.electronicrepairegypt.com/uploads/1/3/1/4/131410479/larejamejoxugosixux.pdf
    • http://files.caseyharvilla.com/uploads/1/3/2/7/132712214/vevuzupakaki.pdf
    • http://files.vivalavisa.net/uploads/1/3/0/9/130969204/nugikimivebokew_viwajewowolisev.pdf
    • http://files.sandstudio.net/uploads/1/3/2/6/132695302/5346308.pdf
    • https://cdn.shopify.com/s/files/1/0433/2738/9851/files/wajifisavevaweruzu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8219/5879/files/69151815606.pdf
    • https://cdn.shopify.com/s/files/1/0434/6799/7344/files/benokit.pdf
    • https://cdn.shopify.com/s/files/1/0437/4416/6037/files/zenodisiwudonowexibeg.pdf
    • https://cdn.shopify.com/s/files/1/0435/7187/1912/files/vitawoxosiniwubogiga.pdf
    • https://cdn.shopify.com/s/files/1/0438/0118/2370/files/antimicrobial_agents_review.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/15508373860.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1575/files/comment_canaliser_sa_colre.pdf
    • https://cdn.shopify.com/s/files/1/0430/8110/5575/files/king_arthur_legends.pdf
    • https://cdn.shopify.com/s/files/1/0434/0681/9477/files/67724264835.pdf
    • https://cdn.shopify.com/s/files/1/0428/4458/6140/files/60963261191.pdf
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/jisufamesibotakodido.pdf
    • https://cdn.shopify.com/s/files/1/0438/9657/0024/files/49913787518.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_off00006ede.bin
372e2c1706f1134e89e198494f7784427168493090e49cd577cecdfebb84761d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDE 5412 bytes
font_01_sfnt_off00008134.bin
1322bb3c0b0b8a5746be7898202c1250ae2ea54465698becaf0e28dd84f87c65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8134 12184 bytes

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