Malicious PDF — malware analysis report

Static analysis result for SHA-256 b78ea86146dd7c74…

MALICIOUS

PDF

34.7 KB Created: 2020-04-20 01:57:42 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: f5f315ed658808bbe534e66b240d91ae SHA-1: f111a4826b97675e0064be4137c82ae76ea4702a SHA-256: b78ea86146dd7c749d83790c64efdcd66022d9ec40feb29085f4b551dffa7031
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains a large number of external links, many of which point to other PDF files with numeric slugs, suggesting a link farm for SEO manipulation or to host malicious content. The presence of a callback phishing lure indicates the document is designed to trick users into calling a phone number, likely for a scam. No scripts were extracted from this sample, but the numerous external URLs are the primary indicators of malicious intent.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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://maryscheesecake.com/uploads/1/3/0/6/130622103/130622103.html#itel+mobile+dialer+mod+apk
    • http://notalkstink.com/uploads/1/3/0/6/130621082/2401754.pdf
    • http://malouky.com/uploads/1/3/1/4/131437668/64b73ee.pdf
    • http://elaineedits.com/uploads/1/3/1/3/131383607/nemet.pdf
    • http://sanowahyudiphotography.com/uploads/1/3/1/3/131380930/6d6059aeb.pdf
    • http://beastinfitness.net/uploads/1/3/0/7/130739322/bilebal.pdf
    • http://certainlysharp.com/uploads/1/3/1/4/131406248/2731047.pdf
    • http://mol650eraywebster.com/uploads/1/3/0/4/130478067/wiliwip-mazedogilus-xefokefewegotu.pdf
    • http://barnyardbunch4hclub.org/uploads/1/3/0/5/130588951/40b142c31f.pdf
    • http://talismanfx.com/uploads/1/3/0/5/130546759/cd98cf1111e.pdf
    • http://wohlleben.org/uploads/1/3/1/3/131379550/tuxaxenoxotudesu.pdf
    • http://collectivevisionllc.com/uploads/1/3/1/4/131452972/3faeab72de6c6.pdf
    • http://southwestgardenandsnow.com/uploads/1/3/0/6/130620614/zususetexeziwo.pdf
    • http://hickorygrovebcc.com/uploads/1/3/1/6/131606405/6218849.pdf
    • http://globalenergytechnology.org/uploads/1/3/0/5/130540193/4069c11c0d.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_off00006144.bin
3dc5ceb16db20deeeb26a14e07f6011d430bc3a3f56d64431126e2e42fa4817d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6144 7608 bytes

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