Malicious PDF — malware analysis report

Static analysis result for SHA-256 30b38120b7ffd6b0…

MALICIOUS

PDF

81.8 KB Created: 2020-09-06 14:09:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 86d75d0bb79a7e895754cf8b15debf74 SHA-1: 4f45658369e9865467e85a47801a1d0b1c533a2a SHA-256: 30b38120b7ffd6b05df9e28bfe421039920147fddbc3308536c0aec618c869d9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. The document body, though heavily obfuscated, contains text suggesting it is an 'annual report' and includes the malicious URL. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, further supporting a malicious intent to redirect users. The primary malicious IOC is the redirector URL.

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.me/wix?keyword=akademiska+hus+ab+annual+report
    • https://cdn.shopify.com/s/files/1/0445/5186/4484/files/pirarerizorika.pdf
    • https://cdn.shopify.com/s/files/1/0434/0688/5020/files/wow_shimmering_shell.pdf
    • https://cdn.shopify.com/s/files/1/0429/7388/8671/files/zagujiginoseted.pdf
    • https://cdn.shopify.com/s/files/1/0432/1280/0168/files/14514396218.pdf
    • https://static.usrfiles.com/ugd/5899d5_430c17e193f846cfa3eeab44f23ca1af.pdf
    • https://static.usrfiles.com/ugd/bfbc46_dcf39d2972794917ab782435d9f8938f.pdf
    • https://static.usrfiles.com/ugd/fb5067_1b10c4b2527c4f23a4912bcb8acea9d9.pdf
    • https://cdn.shopify.com/s/files/1/0428/6591/8118/files/affiliate_marketing_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/59446874077.pdf
    • https://static.usrfiles.com/ugd/0dd040_44edcc1302d546d5bd782b3e6f60b7a9.pdf
    • https://static.usrfiles.com/ugd/fb41f9_40142eff458e421788ddc7d0c39564d6.pdf
    • https://static.usrfiles.com/ugd/0a593f_49bea6420af24ed2a7e80a5dea520fcc.pdf
    • https://static.usrfiles.com/ugd/3cb679_15e6c45b73d0449f90b2690d83bce68d.pdf
    • https://static.usrfiles.com/ugd/46429b_ca565cb826904d5fb28f8dd354c81a46.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_off0000fafa.bin
d29109f03e99a74325890b43410e8b01c032f8b8ed2aa9663168e9fff07e6110		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFA 5392 bytes
font_01_sfnt_off00010d24.bin
30946efa75a8d9a2880d7ea3b41c7a3420563572f81a3a056feb1df53690b355		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10D24 14620 bytes

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