Malicious PDF — malware analysis report

Static analysis result for SHA-256 569ea784727291c7…

MALICIOUS

PDF

45.9 KB Created: 2020-08-31 02:42:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d206b2d7a1f8d319eb87d002688aa3dc SHA-1: 896e1af2b196ca026a6611586c561de8a7fadcc9 SHA-256: 569ea784727291c7bdac3c794409e13f1d5026d1ecc896c72450c26b2e5da88d
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure at 'https://ttraff.com/wix?keyword=el+reino+del+dragon+de+oro'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links pointing to various PDF files, likely intended to manipulate search engine results or distribute further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

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=el+reino+del+dragon+de+oro
    • https://cdn.shopify.com/s/files/1/0456/8852/0863/files/46671974800.pdf
    • https://cdn.shopify.com/s/files/1/0430/5374/4279/files/75166508539.pdf
    • https://cdn.shopify.com/s/files/1/0433/6094/4296/files/wirapapemorafanobudiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/1928/0288/files/acoustic_energy_ae22_manual.pdf
    • https://static.usrfiles.com/ugd/b8c837_6bec7bd20ef2441ba72da88219e6da27.pdf
    • https://static.usrfiles.com/ugd/affb4a_104e95774b2148deb4c12a1ef0bbc3a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_6f20a658b6594a728d1e632be534843f.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_32ab723d757445038fa8c919073989f4.pdf
    • https://static.usrfiles.com/ugd/5b604d_51025c294c6349c99dd7338079a47707.pdf
    • https://static.usrfiles.com/ugd/b8c837_0de82c59e5914d0a97f4cb3f40464daf.pdf
    • https://static.usrfiles.com/ugd/2c8d66_b80dac0102464de5916775d345d25702.pdf
    • https://cdn.shopify.com/s/files/1/0429/4151/3894/files/55675279719.pdf
    • https://cdn.shopify.com/s/files/1/0431/4949/2384/files/acute_appendicitis_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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067b0.bin
e9e451b026c1522553f0106617b431c7933b761761b875c0b4234de4b844640c
pdf-font-stream PDF embedded font (sfnt) at offset 0x67B0 4772 bytes
font_01_sfnt_off000077f2.bin
82e9c89eb0bfb55f9210478c37d1a2844fd74444b7870192d77a05c02b568b90
pdf-font-stream PDF embedded font (sfnt) at offset 0x77F2 11336 bytes
font_02_sfnt_off00009cfb.bin
558642571ad5a25b3c6606b3eec36aa2e40aeb634dad64be684d8c1083f3e7a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CFB 2932 bytes