Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d78ffaf39b9ed9…

MALICIOUS

PDF

51.9 KB Created: 2020-08-08 00:17:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a1814c1384481aff42cd42dedea2380 SHA-1: 64b204c36a3824a998d51aa002dab6f689022df1 SHA-256: 00d78ffaf39b9ed90816498256b7bffda8b516ab8a81bb2e9dae394332f08eb5
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Breath of the wild recipe pdf' and a URL that appears to be part of a link farm designed to attract traffic. The ML classifier also strongly flagged this PDF as malicious.

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=breath+of+the+wild+recipe+pdf
    • http://files.anactortravels.com/uploads/1/3/1/4/131437770/900247.pdf
    • http://bowum.kgsstone.co.uk/uploads/1/3/1/4/131406082/4315118.pdf
    • http://files.ntsnational.com/uploads/1/3/2/7/132740414/dejamupijovegidupi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/3032/3095/files/21074888917.pdf
    • https://cdn.shopify.com/s/files/1/0434/1386/4604/files/galovowikawarifotob.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/58218666430.pdf
    • https://cdn.shopify.com/s/files/1/0437/9285/9293/files/weather_underground_st._louis.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/nitowenaxanatusulanag.pdf
    • https://cdn.shopify.com/s/files/1/0431/3264/9636/files/tabletop_simulator_nexus.pdf
    • https://cdn.shopify.com/s/files/1/0438/2621/7120/files/earthbound_zero_rom.pdf
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/88821239137.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/gojarunodabilamu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7314/2935/files/vosulalexike.pdf
    • https://cdn.shopify.com/s/files/1/0435/5876/4696/files/99762083961.pdf
    • https://cdn.shopify.com/s/files/1/0432/0837/6482/files/22247182310.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e9b.bin
c43772a3df4dbdc6825bb6f96b9700078cf62f5bfd7d5ade5625db83b2fa7f97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E9B 5204 bytes
font_01_sfnt_off00008062.bin
483c38f61f2050f9ee90ff147d63e1844116119e2febfc410124da4605ba7ba7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8062 14396 bytes
font_02_sfnt_off0000ad70.bin
f469c5aa689aa4c1965481b78cfaebbf1c3ebdad2306c7067134b7b4aaa0addd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD70 16164 bytes

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