Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cf0f4696a42d548…

MALICIOUS

PDF

43.4 KB Created: 2020-08-18 13:03:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0ec763f335425f3bf2e4815c01cd9254 SHA-1: 0ae9c3cd20a53b7cdb3ee7730759635f5d495300 SHA-256: 5cf0f4696a42d548e1d93604caece81fb6174649e790a82b1ab6cf53f134b083
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one identified as a malicious redirector pointing to 'https://ttraff.com/pify?keyword=catapult+2+hack+apk'. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm suggests an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. The document body, though heavily obfuscated, contains references to 'catapult 2 hack apk', indicating a lure for potentially illicit software.

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/pify?keyword=catapult+2+hack+apk
    • http://files.mountbiggs.school.nz/uploads/1/3/1/3/131398452/kowuvanogivujeg.pdf
    • http://xenuvura.jeanscookiejar.com/uploads/1/3/1/0/131070357/5621490.pdf
    • http://laxuma.reeldistracted.com/uploads/1/3/0/7/130740178/lavewemikejozixox.pdf
    • http://files.westgatechildcenter.com/uploads/1/3/1/4/131454012/3485974.pdf
    • http://files.landonpetersonmedia.com/uploads/1/3/1/3/131380251/gizivujoropo-pozobidar.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0435/2190/0696/files/bioplastic_products.pdf
    • https://cdn.shopify.com/s/files/1/0440/4445/1990/files/behavioral_finance_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/87382038626.pdf
    • https://cdn.shopify.com/s/files/1/0437/4292/0869/files/pdf_autocad_converter_online.pdf
    • https://cdn.shopify.com/s/files/1/0434/1402/8444/files/irql_not_less_or_equal.pdf
    • https://cdn.shopify.com/s/files/1/0434/4309/3660/files/double_entry_accounting_system.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/31865609227.pdf
    • https://cdn.shopify.com/s/files/1/0427/6686/0455/files/49753557094.pdf
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/xasewereroxoxo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4791/9516/files/data_interpretation_bank_exams_today.pdf
    • https://cdn.shopify.com/s/files/1/0428/6083/9079/files/41583564013.pdf
    • https://cdn.shopify.com/s/files/1/0437/8296/3361/files/nato_phonetic_alphabet_pdf_download.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_off00006b9b.bin
48f45f76e96c313e1442a324175da91c7c37cb20a89b2fa1e6a2a19710917cb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9B 4848 bytes
font_01_sfnt_off00007c14.bin
4fe062fa229f577a8bd19c6e0e988c7e5f21478ed18f13beef2e4b3f5968be06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C14 11404 bytes

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