Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01b7091df511d80…

MALICIOUS

PDF

37.1 KB Created: 2020-08-31 00:41:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18f4b67d4e00d0b60faea5d7635fdeb5 SHA-1: 499b7bcdd694bdc512bc1d0bf1188e280cfcf76e SHA-256: e01b7091df511d80130afe217e59a7eeb9b06a156d4db346df1db48751e7220a
152 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the target URL and appears to be a lure related to 'Hitchhiker's Guide to the Galaxy'. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a larger link farm, likely for SEO manipulation or distributing malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=hitchhiker%2527s+guide+to+the+galaxy+mov
    • https://static.usrfiles.com/ugd/0b46e6_5af3077580554593abd73757f9c2f67c.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b6e61671bf14258ab38b24dae5e0cb3.pdf
    • https://static.usrfiles.com/ugd/217d68_ecb9604c61cf478c85b5d0b83485fa40.pdf
    • https://static.usrfiles.com/ugd/16a96a_fe79b51a0284499bbcb62c130b9a4742.pdf
    • https://static.usrfiles.com/ugd/b8c837_664249c81da44ab2969ba9e06293e833.pdf
    • https://static.usrfiles.com/ugd/764aaa_84fff0bb280445348ca78bb4a5404978.pdf
    • https://static.usrfiles.com/ugd/c1108c_aec4b81e29624824a6f009e7b6726a1f.pdf
    • https://static.usrfiles.com/ugd/ba3095_41c42faa6c06499399524630a2307a8d.pdf
    • https://static.usrfiles.com/ugd/162fe6_11d07f053fec43e3a9265e31665c8b9c.pdf
    • https://static.usrfiles.com/ugd/b8c837_6af028dd38a34b048515a74489ae655a.pdf
    • https://static.usrfiles.com/ugd/1e32c2_bd290c65a3ce419c8f7af7581311f2c8.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_off00005338.bin
f43f96cf319158bb6905d012fbe1d2b9e33c3f973bc3a38cac4770ac38544940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5338 5644 bytes
font_01_sfnt_off0000664d.bin
43ad59d02b8f6550f78855b4efcef91e8d79b0046588f224f228df518f492454		 pdf-font-stream PDF embedded font (sfnt) at offset 0x664D 9796 bytes

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