Malicious PDF — malware analysis report

Static analysis result for SHA-256 efdb4d0c5460c7a0…

MALICIOUS

PDF

57.0 KB Created: 2020-07-23 14:58:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: babdc88afe2074df48d5a1deddfa2219 SHA-1: fe98ecd92e5a0af71d0f58f6d4fbb8bffed2bf9f SHA-256: efdb4d0c5460c7a0a4d39fd5243ff5e174b76d5dcaf15ae95da78251c518ea43
150 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The document body, though heavily obfuscated, contains text related to 'Maslow theory human motivation pdf', suggesting a lure. The primary IOC is the malicious redirector URL.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wb?keyword=maslow%20theory%20human%20motivation%20pdf
    • http://files.ibbyireland.com/uploads/1/3/1/4/131408024/8475841.pdf
    • http://files.protegeedu.com/uploads/1/3/1/3/131379246/pitufubalovojojebato.pdf
    • http://files.thesensualist.org/uploads/1/3/0/8/130814254/wuwotuw_fatitope_bogasokuriv.pdf
    • http://files.tweetyssweeties.com/uploads/1/3/0/7/130775893/bavavigorarejin.pdf
    • https://cdn.shopify.com/s/files/1/0428/2017/3983/files/89008086601.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/87496096307.pdf
    • https://cdn.shopify.com/s/files/1/0433/3685/9813/files/nepitelidul.pdf
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/files/monogekabixelejilenoga.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sibubemazalomasedexikeme.pdf
    • https://cdn.shopify.com/s/files/1/0440/6296/5912/files/xegorenefikeporivi.pdf
    • https://cdn.shopify.com/s/files/1/0427/8213/0332/files/81940744847.pdf
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/95415106976.pdf
    • https://cdn.shopify.com/s/files/1/0434/9807/8372/files/zujotiwebarozadiv.pdf
    • https://cdn.shopify.com/s/files/1/0427/9199/3500/files/50084414452.pdf
    • https://cdn.shopify.com/s/files/1/0438/2828/1506/files/vasare.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6349/files/budolimumatifozavagaviket.pdf
    • https://cdn.shopify.com/s/files/1/0431/7455/9893/files/lipum.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/
    • https://cdn.shopify.com/s/files/1/0429/2273/7830/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a03e.bin
f44fa8c5939edd7ca68513c58ca4dbf372f5961d09f56b6d5e10f6504f102bf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA03E 5420 bytes
font_01_sfnt_off0000b29f.bin
c436766b43a956d6d250ca8d76719d4c0cd9ba288f0e32bda0384d07dcc76c25		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB29F 10416 bytes

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