Malicious PDF — malware analysis report

Static analysis result for SHA-256 513628c11fc217e3…

MALICIOUS

PDF

46.0 KB Created: 2020-06-24 10:50:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 573607caf3dcb5f7c8d1bff40c8e2285 SHA-1: fce3088545de0a7b9721b2f2f437957feb9fce36 SHA-256: 513628c11fc217e3c9fcaec86363341d0b326e5160b05d02bb6cba040a02d581
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are numerically or generically named PDFs, suggesting a link farm designed to manipulate search engine results. The document body, though partially corrupted, contains text related to 'Telecommunications a beginner's guide' and includes URLs that likely lead to further malicious content or phishing pages. 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://tkm-ltd.com/uploads/1/3/1/6/131637137/131637137.html#telecommunications+a+beginner%2527s+guide
    • http://garmarxtrains.com/uploads/1/3/0/6/130639098/5309906.pdf
    • http://hostmaster.heillandigallery.ch/uploads/1/3/0/7/130776811/bimejibanoru-jawedipilozam.pdf
    • http://excursionllama.com/uploads/1/3/0/6/130621524/pibojuzozoxivepax.pdf
    • http://unitedmartialartsjax.net/uploads/1/3/0/6/130621703/8569973.pdf
    • http://globalnationalfunding.com/uploads/1/3/0/9/130969411/2440354.pdf
    • http://thearcvc.vip/uploads/1/3/0/5/130540359/tonojux_pexomepuki_paxaxo_lizigafexoxij.pdf
    • http://bysystem17.net/uploads/1/3/1/4/131410234/dekaluzojuwene-zadubuwa-zamevefi-josefepigedumow.pdf
    • http://vpn.stmartindp.com/uploads/1/3/0/6/130620972/fowosopa-ledepotutawa-nawuwimo-lofuziro.pdf
    • http://forgetmenotconsignment.com/uploads/1/3/1/4/131437633/makarobim.pdf
    • http://thailandincentives.com/uploads/1/3/0/6/130621740/1979909.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_off00007742.bin
edb6b0ae85e4ea3b55789e3ee8cef8f41a1c041a12f334680a8d02380c92a3e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7742 5264 bytes
font_01_sfnt_off00008904.bin
0b040d56729bdcbdd2b504569c86c151dac01ac6a15e1e328cc133bf8c6d40ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8904 10176 bytes

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