Malicious PDF — malware analysis report

Static analysis result for SHA-256 5192970b4778f6ea…

MALICIOUS

PDF

47.4 KB Created: 2020-08-09 15:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 209eb9e6bbff11f9065dc3aa3425768f SHA-1: 948bbc91635742b847946ab64582c39a84097aee SHA-256: 5192970b4778f6ea28fdffd00c1bd3653d8aabbb64db87a7abb2166a0eef3e56
154 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a screenplay download. The ML classifier strongly indicated maliciousness. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. The document body and embedded URLs suggest a lure to download other files, potentially leading to malware execution.

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/pify?keyword=beauty+and+the+beast+2020+screenplay+pdf
    • http://files.musictheoryhelper.com/uploads/1/3/1/4/131408170/fevogasupemamij.pdf
    • http://files.nwcapitalconnection.com/uploads/1/3/0/8/130813818/vukumiridunipavekeg.pdf
    • http://files.crimestop.net/uploads/1/3/1/4/131453405/8443095.pdf
    • http://files.enneagramportland.com/uploads/1/3/2/7/132712266/zovox.pdf
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/chander_pahar_full_book.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/83931864340.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7507/files/lozil.pdf
    • https://cdn.shopify.com/s/files/1/0431/7967/1718/files/vizepisukaxe.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/25045381670.pdf
    • https://cdn.shopify.com/s/files/1/0434/4496/1436/files/21599297133.pdf
    • https://cdn.shopify.com/s/files/1/0432/3033/1040/files/foxoligelupizopik.pdf
    • https://cdn.shopify.com/s/files/1/0436/1653/4690/files/demolition_expert_fallout_4.pdf
    • https://cdn.shopify.com/s/files/1/0440/1859/8038/files/ganolirifu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/c_language_notes_pdf_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7650/1158/files/10297781714.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_off00007bec.bin
2ed473139273474e81bbed1239cc5551a95989fba6f38e387072866fce244efa
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BEC 5808 bytes
font_01_sfnt_off00008faa.bin
5d882f873de81e1d774d37b597bfbbced29e3c3611c990a96e3f9dc026d51620
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAA 9644 bytes