Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e9cf2bfed5097f…

MALICIOUS

PDF

67.5 KB Created: 2020-05-22 16:32:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a67a88b4e3b0e55ca1ef3ce07c3921cd SHA-1: 649abe364f3ce097ec4a9b0473868db1f7ce90e4 SHA-256: e5e9cf2bfed5097f230186c6258fa76cece4f9a9636afb7e416b212ec3a2df6d
70 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF contains a large number of external links, many of which point to other PDFs hosted on similar domains. One of these links, 'http://webdisk.culturebeaumont.org/uploads/1/3/0/6/130620684/130620684.html#zbrush+4r7+p3+crack', suggests a lure for cracked software. The PDF structure and link farm indicate a malicious intent to distribute further malicious content or engage in SEO abuse for phishing. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://webdisk.culturebeaumont.org/uploads/1/3/0/6/130620684/130620684.html#zbrush+4r7+p3+crack
    • http://ledmadeeasy.info/uploads/1/3/0/7/130738913/5d517789b60e.pdf
    • http://phdilettante.com/uploads/1/3/0/6/130639374/5252576.pdf
    • http://garlandrealtygroup.com/uploads/1/3/0/5/130539412/pijetemefabivikotuj.pdf
    • http://lodgepolenagitsuji.com/uploads/1/3/1/1/131163638/6464061.pdf
    • http://toronga.com/uploads/1/3/0/2/130287890/pizuzero-tedumefum-kikexivaxo-fupetup.pdf
    • http://ssvfcpc.org/uploads/1/3/0/7/130739653/9511025.pdf
    • http://bluebarntexas.com/uploads/1/3/0/6/130621780/aee28c245a.pdf
    • http://rochellemepsteinlcsw.com/uploads/1/3/0/3/130379864/e479251.pdf
    • http://carolinapumpworks.com/uploads/1/3/0/2/130287896/xevexax.pdf
    • http://ajpclothing.com/uploads/1/3/0/4/130476499/3775757.pdf
    • http://professionalimagesf.com/uploads/1/3/1/8/131856970/xarojifomeluzok_nidefukedoporot_vulabobukukuse.pdf
    • http://centrekaizen.net/uploads/1/3/0/7/130739852/5193cb.pdf
    • http://philondajohnson.com/uploads/1/3/0/5/130550652/1793743.pdf
    • http://bookitbackground.net/uploads/1/3/1/4/131408100/83dcf5.pdf
    • http://ruck-zuck-figur.eu/uploads/1/3/0/2/130272081/zilomim.pdf
    • http://jolvworld.com/uploads/1/3/0/5/130551019/dexafamopej_sotexo_zadojikozeri.pdf
    • http://sacwebdesignagency.com/uploads/1/3/0/4/130488924/titef-beziwavifali-vitasiruzi.pdf
    • http://fantomair.com/uploads/1/3/0/7/130776344/desonesudof.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_off0000dc58.bin
904809addc210df1a512d5874ae694feb63f0e510e5b3be588cb22c077c636ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC58 11104 bytes

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