Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5195fc3ecee0714…

MALICIOUS

PDF

52.0 KB Created: 2020-07-14 03:34:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca7c1df193e151355c6eb96e88e133a6 SHA-1: 816d139a176fdb20a599f5f839ca53555c101d87 SHA-256: d5195fc3ecee07147b1f31acd617cecce113680aa89db85dcf1da2032c852a3a
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external websites. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to a 'Peter Pan play script pdf'. The primary attack pattern involves redirecting users to malicious sites through these embedded 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.com/wb?keyword=peter%20pan%20play%20script%20pdf
    • http://files.sjhdesignwerks.com/uploads/1/3/1/3/131378918/59abba6ddbc.pdf
    • http://files.dermatagespa.com/uploads/1/3/1/3/131379252/fezorafejux-korovof.pdf
    • http://files.sensibleshock.com/uploads/1/3/2/7/132740479/vasesejakukek_faxej_lelikam.pdf
    • http://files.doctoryvette.com/uploads/1/3/1/3/131379761/vogusasuma.pdf
    • http://files.businessexpertise.net/uploads/1/3/2/6/132682861/tubuxinumoku.pdf
    • http://files.doctoryvette.com/uploads/1/3/1
    • https://xabidepaxi.files.wordpress.com/2020/06/rexavepunonuz.pdf
    • https://zorevuz.files.wordpress.com/2020/07/97977320626.pdf
    • https://disetof.files.wordpress.com/2020/07/zeneranaxizexadiritu.pdf
    • https://rejosejel.files.wordpress.com/2020/07/vupega.pdf
    • https://semagizam.files.wordpress.com/2020/06/4065452496.pdf
    • https://metiwelujipe.files.wordpress.com/2020/07/69534372245.pdf
    • https://bezenuro.files.wordpress.com/2020/06/xutiremamaburan.pdf
    • https://mifetaf234194639.files.wordpress.com/2020/06/56053438569.pdf
    • https://zuverenus.files.wordpress.com/2020/07/14201292941.pdf
    • https://cdn.shopify.com/s/files/1/0432/9567/0432/files/86854099037.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowelikuzamutaj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23929268289.pdf
    • https://cdn.shopify.com/s/files/1/0432/0568/9499/files/fovadeboka.pdf
    • https://cdn.shopify.com/s/files/1/0434/5282/5750/files/vekurejuwubiwaxozo.pdf
    • https://cdn.shopify.com/s/files/1/0429/7841/0655/files/sekuwesapipebupako.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_off00008d84.bin
945c7d662151aeb7a684a4dd00523ff9b17918f7a34c516c3c1d6bdc9e63a8b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D84 4932 bytes
font_01_sfnt_off00009e53.bin
5025fe52e3bf342549ab46608310156119324693bf0ad33442ed5226308094d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E53 10704 bytes

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