Malicious PDF — malware analysis report

Static analysis result for SHA-256 328e833e505f396b…

MALICIOUS

PDF

48.5 KB Created: 2020-08-29 00:33:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82a1e4920f62518ec47482d444a2b6fa SHA-1: ce700cdedb4af55d0770f9fc6cf06e9680893a7d SHA-256: 328e833e505f396b58a9b0dd93ee225b6bfbaefee7a82ec970f0520ec4bdc422
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though partially corrupted, includes a URL that matches the malicious redirector. This suggests the primary attack vector is to trick the user into clicking the link, leading them to malicious infrastructure.

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.cc/wix?keyword=dise%25C3%25B1o+de+ambientes+de+aprendizaje+p
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/sumesajigutu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4837/6232/files/8603190194.pdf
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/79545654607.pdf
    • https://cdn.shopify.com/s/files/1/0437/7749/1105/files/sivikopuwu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7590/3383/files/super_stack_hackerrank.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a498d95f1c549b0a84515fce544a631.pdf
    • https://static.usrfiles.com/ugd/b8c837_407c605c881c44f1a4d6a1741ebced12.pdf
    • https://static.usrfiles.com/ugd/b8c837_651e5f6040ec418d9a75004962bd327c.pdf
    • https://static.usrfiles.com/ugd/b8c837_a30388abdfd24672a16a5c465e37949b.pdf
    • https://static.usrfiles.com/ugd/b8c837_04244193227144738393786ac1a82aa0.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa86e560b5d84967a8f05fbf899b2897.pdf
    • https://static.usrfiles.com/ugd/b8c837_70a1ffe7f8bc4e2f9c2a1297548aa03e.pdf
    • https://static.usrfiles.com/ugd/b8c837_368b52a6506f474486ead39902221bed.pdf
    • https://static.usrfiles.com/ugd/b8c837_b4a197002e1a48ee833a6cc440b77a39.pdf
    • https://cdn.shopify.com/s/files/1/0450/9502/6840/files/apc_smart_ups_srt_96v_3kva_rm_battery_pack.pdf
    • https://cdn.shopify.com/s/files/1/0433/3957/9546/files/69774944707.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_off00007c3b.bin
75b705356dff57f3c628b950576dbbfb8cf9e606e022357b0af567b7b574d874		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3B 5552 bytes
font_01_sfnt_off00008ec6.bin
aee521309cd7795e60800950dc4f17103d6cac7f2b560a2d9ea11a270b2712a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EC6 11072 bytes

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