Malicious PDF — malware analysis report

Static analysis result for SHA-256 335a0972138ca430…

MALICIOUS

PDF

39.8 KB Created: 2020-07-29 03:12:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8abd366d70274aac7c8f3c25f68f8c89 SHA-1: 492681ddd4b8437dd330c8c059dc67eceac8a7e9 SHA-256: 335a0972138ca4302f7f414ab945f358811ec691ef50c551413d482f2523d671
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a direct link to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, appears to contain text related to the lure of decorating unicorn-shaped candies. The primary attack vector is likely social engineering via a malicious link embedded within the PDF, leading users to a malicious site. No scripts were extracted, limiting the analysis of further payload delivery or persistence mechanisms.

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=como+decorar+bombones+en+forma+de+unicornio
    • http://files.mutationpennants.com/uploads/1/3/0/7/130775484/c17e79e42.pdf
    • http://files.pawneecityactivities.org/uploads/1/3/1/3/131384436/7982693.pdf
    • http://files.peggypetersen.com/uploads/1/3/0/9/130969358/8088577.pdf
    • http://files.sspeterpaulpassaic.org/uploads/1/3/0/7/130775784/5596887.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8726/files/39717445269.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/tijefok.pdf
    • https://cdn.shopify.com/s/files/1/0432/7650/1147/files/fonigekixivi.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/85607184681.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/49181926903.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/54892301935.pdf
    • https://cdn.shopify.com/s/files/1/0434/3840/7845/files/wudinosozaxutajo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gomejalubewetilukifij.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/pavax.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/29264890732.pdf
    • https://cdn.shopify.com/s/files/1/0430/3470/6083/files/najegaloguwexolovawuzalag.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/1/0433/0687

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cf8.bin
228f408e658ae8f19d35fd3e601317c17dcb7ab11658c552b5afaca5cd8faa8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF8 5100 bytes
font_01_sfnt_off00006e2e.bin
241f67ee299b8804a4aab6f139ec3941751791ea0a6ba4b6096545d1f501441c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2E 10864 bytes

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