Malicious PDF — malware analysis report

Static analysis result for SHA-256 acbb49940e688e00…

MALICIOUS

PDF

31.1 KB Created: 2020-05-02 15:02:49 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7d58a0dfa3668783941a1f85ec1b1a14 SHA-1: fb157c8aeb4d787d0a53f922d999055776aa361b SHA-256: acbb49940e688e0046fe7bcd78c9609d54031b0b3a26badc54cab283b5aa96e6
62 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which point to other PDF files hosted on similar domains, indicating a link farm. One of the embedded links, 'http://mymissblue.com/uploads/1/3/0/6/130620937/130620937.html#barbie+girl+aqua+video+song', appears to be a lure to entice users to click. The heuristic 'PDF_SEO_LINK_FARM' strongly suggests this is a malicious tactic to distribute further malicious content. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://mymissblue.com/uploads/1/3/0/6/130620937/130620937.html#barbie+girl+aqua+video+song
    • http://meredithkaler.com/uploads/1/3/1/1/131163909/1674983.pdf
    • http://bookhook.org/uploads/1/3/0/5/130588518/39a11088edc.pdf
    • http://chloeboyle.com/uploads/1/3/0/6/130621369/marodu_xogexalog_getudu.pdf
    • http://headfirstenterprises.com/uploads/1/3/1/3/131397974/1715465.pdf
    • http://agapparel.shop/uploads/1/3/0/6/130620625/nibekenazeju.pdf
    • http://golfboardu.com/uploads/1/3/0/9/130969383/pejavemuzumibevumet.pdf
    • http://theatlantasnob.com/uploads/1/3/1/6/131637342/dasexev_mafikurudopasuf_fagovegolul.pdf
    • http://sleepvillecanada.com/uploads/1/3/1/6/131637030/6807427.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055ab.bin
bfd7a42778d77470184cf480871f49d098ab69d06ab93da2cf959342a893787b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55AB 6812 bytes

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