Malicious PDF — malware analysis report

Static analysis result for SHA-256 07849664f744b05e…

MALICIOUS

PDF

38.6 KB Created: 2020-08-31 06:27:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6dc7deb2967f0d7ae41317455c44c2ec SHA-1: 2d4316ac7fae8caeb87db4e9aa61e72bba24e5c2 SHA-256: 07849664f744b05e03eafdc979b547097a311a637684a92b29b939172d19cc3b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is `https://ttraff.cc/wix?keyword=water+ridge+pull+out+faucet+manual`, which is flagged as malicious. The document body, though heavily obfuscated, appears to contain the same URL and other links, suggesting a link farm or redirection tactic to lead users to malicious content. The presence of numerous links and the malicious redirector strongly indicate an attempt to compromise the user through a phishing or redirection scheme.

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=water+ridge+pull+out+faucet+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/zofotimegugidabuzir.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/farm_animals_worksheets_for_preschoolers.pdf
    • https://cdn.shopify.com/s/files/1/0428/1666/7814/files/descargar_bloody_roar_2_para_android_gratis.pdf
    • https://static.usrfiles.com/ugd/b8c837_3849cf880a9d411e869eb4303ccdca74.pdf
    • https://static.usrfiles.com/ugd/a86d68_1d201feecb7747f8b197349d6b6a6911.pdf
    • https://static.usrfiles.com/ugd/77eba6_9bfb2128afb74e3ba8789da746abb7fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_28659cd01f1f4b75b434e49e3ee1b8be.pdf
    • https://static.usrfiles.com/ugd/c63dba_6c1bea289ec642c6a53c7434406ed1a7.pdf
    • https://static.usrfiles.com/ugd/b8c837_cac89a27fce747b0a6f67eab3ad22d83.pdf
    • https://static.usrfiles.com/ugd/b8c837_4912825f01514350b65ddd54cb9076a2.pdf
    • https://static.usrfiles.com/ugd/704566_ee0b6677e2b9448da5a20cfe9bcb5020.pdf
    • https://static.usrfiles.com/ugd/b8c837_8731ca8a8b6c45afb1c21e8d644fb998.pdf
    • https://static.usrfiles.com/ugd/ba3095_2b473319ac7a4ec39f9a64173667d070.pdf
    • https://static.usrfiles.com/ugd/af0aa9_22eba72ad386446c8f4cb8ce27bdb215.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005843.bin
30a9b2a96998c96f938435a74e753dea6801a1a0eac9939413b976542b077404		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5843 5308 bytes
font_01_sfnt_off00006a4d.bin
eb37e02ffe9125435a67ca42b578c7602e6b5f5c45069457d507bbb490455f16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4D 10352 bytes

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