Malicious PDF — malware analysis report

Static analysis result for SHA-256 71e2d8e97827de1e…

MALICIOUS

PDF

44.7 KB Created: 2020-09-01 05:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79f797fd22428d051f1eda023f6b0e6e SHA-1: 43b57283ffae8c549c096ab5f650ed6bba1b2b62 SHA-256: 71e2d8e97827de1e343c3909a331e9123aa40f3e76f8df6e0f7da9b6c488e124
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, many of which point to a redirector service. The document body, though partially corrupted, includes a URL that leads to a known malicious redirector. This suggests the document is part of a link farm or SEO poisoning campaign designed to drive traffic to malicious sites.

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.com/wix?keyword=o+que+%25C3%25A9+anemia+tra%25C3%25A7o+falciforme
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_488d2be21b5e4570abc6eb9384c0f90e.pdf
    • https://static.usrfiles.com/ugd/b8c837_0536c9bc57ad472bbb5a5fa32ff314f3.pdf
    • https://static.usrfiles.com/ugd/eb6612_11fe796700884763842b33790ff849f0.pdf
    • https://static.usrfiles.com/ugd/d4579c_808665d158d44522ab95c36812774df6.pdf
    • https://static.usrfiles.com/ugd/6c032c_ab6161b3367143ad8d462ca85fb74308.pdf
    • https://static.usrfiles.com/ugd/c7a620_00ec209744cc452cbafc9277ee1fdf2e.pdf
    • https://static.usrfiles.com/ugd/808d8c_d8556275bd0a4390b8d05dba228ab3a7.pdf
    • https://cdn.shopify.com/s/files/1/0429/9590/8761/files/enterprise_risk_management_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/7165/8389/files/python_environment_variables_windows.pdf
    • https://cdn.shopify.com/s/files/1/0433/7011/9333/files/mehmet_akif_ersoy_kuran_meali.pdf
    • https://cdn.shopify.com/s/files/1/0432/2426/8968/files/pelitojobofufazux.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97897646990.pdf
    • https://static.usrfiles.com/ugd/b916f4_31af4506a8b94ea59331f28665218573.pdf
    • https://static.usrfiles.com/ugd/0d002d_5065797450a848d59371b1640b0726c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e866402209b4a83b948a68f0bf0a07d.pdf
    • https://static.usrfiles.com/ugd/d775a9_74c58562772147a4bd74e517201a5bd0.pdf
    • https://static.usrfiles.com/ugd/1cc7e8_7911a0a92a4a476cbea51e48d15ae223.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_off00006c8d.bin
ef41a9471f7c872ba3acc260216e80108da87e675130831960862cc04f21e874		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C8D 5324 bytes
font_01_sfnt_off00007e12.bin
7ae81324a21f2dfdd61890fed1190ec767c87c599f10946eea20023e54bdaba3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E12 12764 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.